Mathematics (ENG)

Mathematics develops thinking to analyze and organize; to find patterns and establish cause and effect relationships; to reason and draw conclusions; to think logically, strategically, and abstractly.

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Contents
Algebra
Lesson-1 Topic: Basic Operations with Fractions: Proper, Improper, Mixed, and Decimal.
Free
Algebra
Lesson-1 Topic: Basic Operations with Fractions: Proper, Improper, Mixed, and Decimal.

In this lesson, you will learn how to perform addition, subtraction, multiplication, and division with proper, improper, mixed, and decimal fractions, and solve related problems.

Free
Lesson-2 Topic: Arithmetic Operations with Fractions and Periodic Decimals.
Algebra
Lesson-2 Topic: Arithmetic Operations with Fractions and Periodic Decimals.

Learning to work with fractions next: In this lesson, you will learn how to work with decimals and also learn about periodical decimals.

Lesson-3 Topic: Formulas for powers and working with them in fractions.
Algebra
Lesson-3 Topic: Formulas for powers and working with them in fractions.

In this lesson, you'll learn about exponents of numbers and their properties, including the rules of exponents and how to use them.

Lesson-4 Topic: Monomials and Polynomials: Concepts, Operations, and Factoring.
Algebra
Lesson-4 Topic: Monomials and Polynomials: Concepts, Operations, and Factoring.

In this lesson, you will explore the concepts and differences between monomials and polynomials, expand brackets during addition and subtraction, multiply monomials by brackets, multiply brackets by brackets, factor expressions, and group terms effectively.

Lesson-5 Topic: Abbreviated multiplication formulas and examples.
Algebra
Lesson-5 Topic: Abbreviated multiplication formulas and examples.

In this lesson, you will study the basic formulas of abbreviated multiplication and practice solving examples based exclusively on them.

Lesson-6 Topic: Simplifying Algebraic Fractions: Multiplication and Division.
Algebra
Lesson-6 Topic: Simplifying Algebraic Fractions: Multiplication and Division.

In this lesson, you will focus on simplifying fractions with variables through multiplication and division, using factoring and cancellation techniques.

Lesson-7 Topic: Finding Common Denominator of Algebraic Fractions.
Algebra
Lesson-7 Topic: Finding Common Denominator of Algebraic Fractions.

In this lesson, you will learn how to find a common denominator for algebraic fractions and simplify expressions effectively.

Lesson-8 Topic: Operations with Fractions and Decimals.
Algebra
Lesson-8 Topic: Operations with Fractions and Decimals.

In this lesson, you will practice addition, subtraction, multiplication, and division of fractions and decimal fractions, including mixed operations.

Lesson-9 Topic: Operations with Farctions. Medium - Hard Level.
Algebra
Lesson-9 Topic: Operations with Farctions. Medium - Hard Level.

In this lesson, you will solve medium and difficult level problems on adding, subtracting, multiplying, and dividing fractions.

Lesson-10 Topic: Dividing Polynomials, Bezout's Theorem, Synthetic Division.
Algebra
Lesson-10 Topic: Dividing Polynomials, Bezout's Theorem, Synthetic Division.

In this lesson, you will learn how to divide polynomials, how to use the Bezos theorem, and how to use the synthetic division method to perform effective calculations.

Lesson-11 Topic: Linear Equations, Quadratic Equations, Equations Reducible to Quadratic, Viet's Theorem.
Algebra
Lesson-11 Topic: Linear Equations, Quadratic Equations, Equations Reducible to Quadratic, Viet's Theorem.

In this lesson, you will study linear equations, quadratic equations, equations reducible to quadratic form, and apply Vieta's theorem to solve problems efficiently.

Lesson-12 Topic: Varied Equations Reducible to Quadratic and Substitution Method.
Free
Algebra
Lesson-12 Topic: Varied Equations Reducible to Quadratic and Substitution Method.

In this lesson, you will explore a range of equations reducible to quadratic form and practice solving them using the substitution method.

Free
Lesson-13 Topic: Solving power equations using Bezout's method and equations of higher degrees.
Algebra
Lesson-13 Topic: Solving power equations using Bezout's method and equations of higher degrees.

In this lesson, you will learn to solve power equations using Bézout’s method, including root guessing and dividing polynomials by a monomial in columns, as well as tackle equations of higher degrees.

Lesson-14 Topic: Solving Irrational Equations by Raising to a Power.
Algebra
Lesson-14 Topic: Solving Irrational Equations by Raising to a Power.

In this lesson, you will learn how to solve irrational equations by raising both sides of the equation to a power, simplifying and solving for the variable.

Lesson-15 Topic: Solving Irrational Equations by Substitution.
Algebra
Lesson-15 Topic: Solving Irrational Equations by Substitution.

In this lesson, you will learn how to solve irrational equations using substitution, simplifying the equation by replacing variables to make the equation solvable.

Lesson-16 Topic: Removing Irrationality: Rationalizing the Denominator.
Algebra
Lesson-16 Topic: Removing Irrationality: Rationalizing the Denominator.

In this lesson, you will learn how to remove irrationality by rationalizing the denominator of fractions, making expressions easier to work with.

Lesson-17 Topic: Simplifying Algebraic Expressions (Easy - Medium).
Algebra
Lesson-17 Topic: Simplifying Algebraic Expressions (Easy - Medium).

In this lesson, you will practice simplifying algebraic expressions through factoring, combining like terms, and using basic operations in easy to medium-level exercises.

Lesson-18 Topic: Simplifying Irrational Algebraic Expressions (Medium - Hard).
Algebra
Lesson-18 Topic: Simplifying Irrational Algebraic Expressions (Medium - Hard).

In this lesson, you will tackle medium to hard problems involving the simplification of irrational algebraic expressions using advanced techniques.

Lesson-19 Topic: Linear and Quadratic System of Equations.
Algebra
Lesson-19 Topic: Linear and Quadratic System of Equations.

In this lesson, you will learn methods to solve systems of equations involving one linear and one quadratic equation, using substitution and elimination techniques.

Lesson-20 Topic: Medium Level System of Equations.
Algebra
Lesson-20 Topic: Medium Level System of Equations.

In this lesson, you will practice solving medium-level systems of equations, involving both linear and nonlinear relationships, using substitution and elimination methods.

Lesson-21 Topic: Complex Systems of Equations with Substitution.
Algebra
Lesson-21 Topic: Complex Systems of Equations with Substitution.

In this lesson, you will explore advanced methods for solving complex systems of equations, focusing on the substitution technique to simplify and solve them effectively.

Lesson-22 Topic: Basic Inequalities and the Interval Method.
Algebra
Lesson-22 Topic: Basic Inequalities and the Interval Method.

In this lesson, you will learn to solve basic inequalities and apply the interval method to find solution sets efficiently.

Lesson-23 Topic: Advanced Inequalities and Systems: The Interval Method.
Algebra
Lesson-23 Topic: Advanced Inequalities and Systems: The Interval Method.

In this lesson, you will master the interval method for solving complex inequalities and learn to solve systems of inequalities with multiple variables.

Advanced Algebra
Lesson-24 Topic: Equations with Absolute Values.
Free
Advanced Algebra
Lesson-24 Topic: Equations with Absolute Values.

In this lesson, you will learn techniques to solve equations involving absolute values, including splitting cases based on the definition of absolute value.

Free
Lesson-25 Topic: Inequalities with Absolute Values.
Advanced Algebra
Lesson-25 Topic: Inequalities with Absolute Values.

In this lesson, you will explore methods for solving inequalities involving absolute values, including case analysis and graphical interpretation.

Lesson-26 Topic: Irrational Inequalities: Easy to Medium.
Advanced Algebra
Lesson-26 Topic: Irrational Inequalities: Easy to Medium.

In this lesson, you will practice solving irrational inequalities, using techniques like squaring and interval testing for easy to medium-level problems.

Lesson-27 Topic: Irrational Inequalities: Medium to Hard.
Advanced Algebra
Lesson-27 Topic: Irrational Inequalities: Medium to Hard.

In this lesson, you will tackle medium to hard-level irrational inequalities, applying advanced techniques such as squaring and analyzing domains for accurate solutions.

Lesson-28 Topic: Vieta's Theorem.
Advanced Algebra
Lesson-28 Topic: Vieta's Theorem.

In this lesson, you will learn Vieta’s theorem, its connection to the roots and coefficients of quadratic equations, and practice solving problems using this powerful tool.

Lesson-29 Topic: Arithmetic Progression.
Advanced Algebra
Lesson-29 Topic: Arithmetic Progression.

In this lesson, you will explore the properties of arithmetic progressions, derive formulas for the 𝑛-th term and the sum of terms, and solve related problems.

Lesson-30 Topic: Geometric Progression.
Advanced Algebra
Lesson-30 Topic: Geometric Progression.

In this lesson, you will study the properties of geometric progressions, learn how to find the 𝑛-th term and the sum of terms, and solve related problems.

Lesson-31 Topic: Infinite Geometric Progression.
Advanced Algebra
Lesson-31 Topic: Infinite Geometric Progression.

In this lesson, you will explore infinite geometric progressions, learn the conditions for convergence, and calculate the sum of an infinite geometric series.

Lesson-32 Topic: Basics of Functions.
Advanced Algebra
Lesson-32 Topic: Basics of Functions.

In this lesson, you will learn the fundamental concepts of functions, including their definition, notation, domain, and range, as well as how to graph basic functions.

Lesson-33 Topic: Graph Construction.
Advanced Algebra
Lesson-33 Topic: Graph Construction.

In this lesson, you will learn how to plot graphs of various types of functions, including linear, quadratic, and exponential, as well as understand their key characteristics, such as intersection points, slopes, and asymptotes.

Lesson-34 Topic: Properties of Linear Equations: Theory and Examples.
Advanced Algebra
Lesson-34 Topic: Properties of Linear Equations: Theory and Examples.

In this lesson, you will explore the key properties of linear equations, including slope, intercept, and their graphical representation, with examples to reinforce your understanding.

Lesson-35 Topic: Parameter-Based Problems.
Advanced Algebra
Lesson-35 Topic: Parameter-Based Problems.

In this lesson, you will learn how to solve tasks involving parameters, including how to analyze and manipulate equations or systems of equations where one or more variables act as parameters.

Lesson-36 Topic: Solving Word Problems with Linear Equations and Systems.
Advanced Algebra
Lesson-36 Topic: Solving Word Problems with Linear Equations and Systems.

In this lesson, you will practice solving word problems using linear equations and systems of linear equations, applying real-world scenarios to find solutions.

Lesson-37 Topic: Solving Word Problems with Quadratic Equations and Systems.
Advanced Algebra
Lesson-37 Topic: Solving Word Problems with Quadratic Equations and Systems.

In this lesson, you will tackle word problems that involve quadratic equations and systems of equations, using appropriate methods to model and solve real-life situations.

Lesson-38 Topic: Word Problems on Motion.
Advanced Algebra
Lesson-38 Topic: Word Problems on Motion.

In this lesson, you will solve word problems related to motion, including distance, speed, and time, using linear equations and systems to model and find solutions.

Lesson-39 Topic: Motion Problems: Meeting, Pursuit, Circular Motion, and Average Speed.
Advanced algebra
Lesson-39 Topic: Motion Problems: Meeting, Pursuit, Circular Motion, and Average Speed.

In this lesson, you will solve complex motion problems, including those involving objects moving towards each other, in pursuit, along a circular path, and calculating average speed.

Lesson-40 Topic: Work-Related Word Problems.
Advanced Algebra
Lesson-40 Topic: Work-Related Word Problems.

In this lesson, you will solve word problems related to work, such as tasks completed by multiple workers at different rates, using equations and systems to find solutions.

Lesson-41 Topic: Percentages.
Advanced Algebra
Lesson-41 Topic: Percentages.

In this lesson, you will learn the basics of percentages, including how to calculate percentage increases, decreases, and solve problems involving percentages in real-life scenarios.

Lesson-42 Topic: Mixture Problems.
Advanced Algebra
Lesson-42 Topic: Mixture Problems.

In this lesson, you will solve mixture problems involving the combination of different substances, such as liquids or solids, using algebraic equations to find unknown quantities.

Lesson-43 Topic: Solving Various Word Problems: Age, Money, Etc.
Advanced Algebra
Lesson-43 Topic: Solving Various Word Problems: Age, Money, Etc.

In this lesson, you will solve a variety of word problems related to age, money, and other real-life scenarios, applying algebraic techniques to find solutions.

Trigonometry
Lesson-44 Topic: Basic Concepts of Trigonometry.
Free
Trigonometry
Lesson-44 Topic: Basic Concepts of Trigonometry.

This lesson covers the foundational principles of trigonometry, focusing on understanding trigonometric ratios and their use in solving problems involving right triangles.

Free
Lesson-45 Topic: Basic Trigonometric Identities and Reduction Formulas.
Trigonometry
Lesson-45 Topic: Basic Trigonometric Identities and Reduction Formulas.

This lesson covers the key trigonometric identities, such as the Pythagorean identities, reciprocal identities, and co-function identities, as well as reduction formulas for simplifying trigonometric expressions.

Lesson-46 Topic: Simplifying Trigonometric Expressions Using Basic Trigonometric Identities.
Trigonometry
Lesson-46 Topic: Simplifying Trigonometric Expressions Using Basic Trigonometric Identities.

This lesson focuses on simplifying complex trigonometric expressions by applying basic trigonometric identities, such as Pythagorean, reciprocal, and quotient identities.

Lesson-47 Topic: Sum and Difference Formulas for Angles and Trigonometric Functions.
Trigonometry
Lesson-47 Topic: Sum and Difference Formulas for Angles and Trigonometric Functions.

In this lesson, you will study the sum and difference formulas for trigonometric functions, including sine, cosine, and tangent, and practice solving problems using these formulas.

Lesson-48 Topic: Double Angle and Half Angle Formulas.
Trigonometry
Lesson-48 Topic: Double Angle and Half Angle Formulas.

In this lesson, you will learn the double angle and half angle formulas for trigonometric functions, and practice applying them to simplify expressions and solve equations.

Lesson-49 Topic: Basic Simplification of Trigonometric Expressions.
Trigonometry
Lesson-49 Topic: Basic Simplification of Trigonometric Expressions.

In this lesson, you will practice simplifying complex trigonometric expressions using fundamental identities, sum and difference formulas, and double and half-angle formulas.

Lesson-50 Topic: Intermediate Simplification of Trigonometric Expressions.
Trigonometry
Lesson-50 Topic: Intermediate Simplification of Trigonometric Expressions.

In this lesson, you will practice solving level-two problems by applying trigonometric formulas and identities to simplify moderately complex expressions.

Lesson-51 Topic: Advanced Simplification of Trigonometric Expressions.
Trigonometry
Lesson-51 Topic: Advanced Simplification of Trigonometric Expressions.

In this lesson, you will tackle level-three problems by applying advanced trigonometric formulas and identities to simplify complex expressions.

Lesson-52 Topic: Inverse Trigonometric Functions.
Trigonometry
Lesson-52 Topic: Inverse Trigonometric Functions.

In this lesson, you will explore the properties, domains, and ranges of inverse trigonometric functions, and solve problems involving their applications in simplifying expressions and solving equations.

Lesson-53 Topic: Basics of Trigonometric Equations.
Trigonometry
Lesson-53 Topic: Basics of Trigonometric Equations.

In this lesson, you will learn the foundational concepts of trigonometric equations, including their general forms and methods for finding solutions within given intervals.

Lesson-54 Topic: Trigonometric Equations - Intermediate Level and Mixed Types.
Trigonometry
Lesson-54 Topic: Trigonometric Equations - Intermediate Level and Mixed Types.

In this lesson, you will learn how to solve trigonometric equations of intermediate complexity, including mixed types that combine various trigonometric functions. Techniques for simplifying, transforming, and applying identities will be covered to help solve these equations effectively.

Lesson-55 Topic: Solving Trigonometric Equations in a Given Interval.
Trigonometry
Lesson-55 Topic: Solving Trigonometric Equations in a Given Interval.

In this lesson, you will practice solving trigonometric equations within specific intervals, applying appropriate techniques to find all possible solutions.

Lesson-56 Topic: Trigonometric Equations with Square Roots and Absolute Values.
Trigonometry
Lesson-56 Topic: Trigonometric Equations with Square Roots and Absolute Values.

In this lesson, you will learn to solve trigonometric equations involving square roots and absolute values. Using algebraic methods and trigonometric identities, you'll simplify and solve these equations with ease.

Lesson-57 Topic: Solving Systems of Trigonometric Equations.
Trigonometry
Lesson-57 Topic: Solving Systems of Trigonometric Equations.

In this lesson, you will learn how to solve systems of trigonometric equations, using substitution, elimination, and other methods to find solutions to multiple equations involving trigonometric functions.

Lesson-58 Topic: Solving Trigonometric Inequalities with the Help of the Unit Circle.
Trigonometry
Lesson-58 Topic: Solving Trigonometric Inequalities with the Help of the Unit Circle.

In this lesson, you will learn how to solve trigonometric inequalities using the unit circle. You will explore how the unit circle assists in visualizing and simplifying the process of solving inequalities involving trigonometric functions.

Lesson-59 Topic: Solving Trigonometric Inequalities: Graphical and Interval Methods.
Trigonometry
Lesson-59 Topic: Solving Trigonometric Inequalities: Graphical and Interval Methods.

In this lesson, you will learn how to solve trigonometric inequalities using graphical techniques and the interval method to find solution sets within specified ranges.

Logarithms. Applied Mathematics
Lesson-60 Topic: Exponential Equations.
Free
Logarithms
Lesson-60 Topic: Exponential Equations.

In this lesson, we will explore how to solve exponential equations by utilizing logarithms and the properties of exponents. You will gain a deeper understanding of the techniques for simplifying and solving these equations with precision and efficiency.

Free
Lesson-61 Topic: Solving Exponential Inequalities.
Logarithms
Lesson-61 Topic: Solving Exponential Inequalities.

In this lesson, you will learn how to solve exponential inequalities, using logarithmic properties and other techniques to find solutions within given constraints.

Lesson-62 Topic: Introduction to Logarithms: Formulas and Basic Arithmetic.
Logarithms
Lesson-62 Topic: Introduction to Logarithms: Formulas and Basic Arithmetic.

In this lesson, you will explore the fundamentals of logarithms, including key formulas, properties, and basic arithmetic operations involving logarithmic expressions.

Lesson-63 Topic: Logarithmic Simplification: Examples and Practice.
Logarithms
Lesson-63 Topic: Logarithmic Simplification: Examples and Practice.

In this lesson, you will practice simplifying logarithmic expressions using logarithmic properties and rules, with step-by-step examples to reinforce understanding.

Lesson-64 Topic: Basic Logarithmic Equations.
Logarithms
Lesson-64 Topic: Basic Logarithmic Equations.

In this lesson, you will learn how to solve basic logarithmic equations by applying the properties of logarithms. You will practice using techniques such as converting between logarithmic and exponential forms to simplify and solve these equations.

Lesson-65 Topic: Solving Logarithmic Equations: Intermediate to Advanced.
Logarithms
Lesson-65 Topic: Solving Logarithmic Equations: Intermediate to Advanced.

In this lesson, you will learn to solve intermediate to advanced logarithmic equations, applying logarithmic properties and techniques for more complex expressions.

Lesson-66 Topic: System of Logarithmic Equations.
Logarithms
Lesson-66 Topic: System of Logarithmic Equations.

In this lesson, you will learn how to solve systems of logarithmic equations. You will explore methods for simplifying and solving multiple logarithmic equations simultaneously using properties of logarithms and algebraic techniques.

Lesson-67 Topic: Solving Logarithmic Inequalities: Basics and Substitution Method.
Logarithms
Lesson-67 Topic: Solving Logarithmic Inequalities: Basics and Substitution Method.

In this lesson, you will learn how to solve basic logarithmic inequalities, using substitution and logarithmic properties to find solution sets effectively.

Lesson-68 Topic: Logarithmic Inequalities Using the Interval Method.
Logarithms
Lesson-68 Topic: Logarithmic Inequalities Using the Interval Method.

In this lesson, you will learn how to solve logarithmic inequalities using the interval method, analyzing the solution sets and determining the valid intervals for the inequality.

Lesson-69 Topic: Logarithmic Inequalities with Variable Bases.
Logarithms
Lesson-69 Topic: Logarithmic Inequalities with Variable Bases.

In this lesson, you will explore how to solve logarithmic inequalities where the base is a variable, using logarithmic properties and techniques to find the solution sets.

Lesson-70 Topic: Advanced Logarithmic Inequalities and Rationalization.
Logarithms
Lesson-70 Topic: Advanced Logarithmic Inequalities and Rationalization.

In this lesson, you will dive into advanced logarithmic inequalities and learn the rationalization methodology for solving them. You will explore how to simplify complex logarithmic inequalities and use rationalization to find solutions effectively.

Lesson-71 Topic: Introduction to Complex Numbers.
Logarithms
Lesson-71 Topic: Introduction to Complex Numbers.

In this lesson, you will learn about complex numbers, their components (real and imaginary parts), operations (addition, subtraction, multiplication, and division), and how to represent them in the complex plane.

Lesson-72 Topic: Introduction to Matrices.
Logarithms
Lesson-72 Topic: Introduction to Matrices.

In this lesson, you will learn the basics of matrices, including their definitions, types, and how to perform operations such as addition, subtraction, and multiplication.

Lesson-73 Topic: The Probability Theory.
Logarithms
Lesson-73 Topic: The Probability Theory.

In this lesson, you will explore the fundamentals of probability theory, including basic concepts such as events, outcomes, probability rules, and how to calculate the probability of simple events.

Lesson-74 Topic: Combinatorics: Permutations and Combinations.
Logarithms
Lesson-74 Topic: Combinatorics: Permutations and Combinations.

In this lesson, you will explore the fundamentals of combinatorics, focusing on permutations and combinations, learning how to calculate the number of ways to arrange or select items in various scenarios.

Lesson-75 Topic: Permutations with Repetitions and Circular Permutations.
Logarithms
Lesson-75 Topic: Permutations with Repetitions and Circular Permutations.

In this lesson, you will learn about permutations with repetitions and circular permutations, exploring how to calculate arrangements when items are repeated or arranged in a circle.

Lesson-76 Topic: Statistics.
Logarithms
Lesson-76 Topic: Statistics.

In this lesson, you will explore the fundamentals of statistics, including data analysis, probability, and the use of statistical tools to interpret and present information. You will learn how to work with various types of data and understand the importance of statistical methods in different fields.

Fundamentals of Higher Mathematics
Lesson-77 Topic: Derivatives and Their Calculation.
Free
Fundamentals of Higher Mathematics
Lesson-77 Topic: Derivatives and Their Calculation.

In this lesson, you will learn the concept of derivatives, including how to calculate the derivative of a function using various rules such as the power rule, product rule, quotient rule, and chain rule.

Free
Lesson-78 Topic: Application of Derivatives in Function Analysis.
Fundamentals of Higher Mathematics
Lesson-78 Topic: Application of Derivatives in Function Analysis.

In this lesson, you will learn how to apply derivatives in analyzing functions. You will explore how to use derivatives to find critical points, determine the behavior of functions, and analyze the concavity of graphs. This lesson focuses on how derivatives aid in understanding the properties and behaviors of functions.

Lesson-79 Topic: Sketching Graphs Using Derivatives.
Fundamentals of Higher Mathematics
Lesson-79 Topic: Sketching Graphs Using Derivatives.

In this lesson, you will learn how to use derivatives to sketch the graph of a function, analyzing critical points, inflection points, and the behavior of the function to create an accurate graph.

Lesson-80 Topic: Geometrical Meaning of Derivatives.
Fundamentals of Higher Mathematics
Lesson-80 Topic: Geometrical Meaning of Derivatives.

In this lesson, you will learn the geometrical interpretation of derivatives. The derivative represents the slope of the tangent line to a curve at any point, providing insight into the rate of change of a function.

Lesson-81 Topic: Advanced Derivatives: Physics Applications, Implicit Differentiation, and Parametric Equations.
Fundamentals of Higher Mathematics
Lesson-81 Topic: Advanced Derivatives: Physics Applications, Implicit Differentiation, and Parametric Equations.

In this lesson, you will explore the application of derivatives in physics, learn implicit differentiation, logarithmic differentiation, and how to find derivatives of parametric equations.

Lesson-82 Topic: Limits: Introduction and Basic Concepts.
Fundamentals of Higher Mathematics
Lesson-82 Topic: Limits: Introduction and Basic Concepts.

In this lesson, you will learn the fundamentals of limits, including how to evaluate limits of functions as they approach a specific point, and the basic properties of limits in calculus.

Lesson-83 Topic: Limits: Advanced Concepts.
Fundamentals of Higher Mathematics
Lesson-83 Topic: Limits: Advanced Concepts.

In this lesson, you will dive deeper into limits, exploring advanced techniques such as L’Hopital’s Rule, limits at infinity, and evaluating indeterminate forms, to better understand their application in calculus.

Lesson-84 Topic: Antiderivatives.
Fundamentals of Higher Mathematics
Lesson-84 Topic: Antiderivatives.

In this lesson, you will explore antiderivatives, which are the reverse process of differentiation. You will learn how to find the general solution of an antiderivative, understand the concept of constant of integration, and practice techniques such as substitution and recognizing common antiderivatives to solve problems.

Lesson-85 Topic: Integrals with Absolute Values and Area Under the Curve.
Fundamentals of Higher Mathematics
Lesson-85 Topic: Integrals with Absolute Values and Area Under the Curve.

In this lesson, you will learn how to solve integrals involving absolute values and calculate the area under the curve of a given function using definite integrals.

Lesson-86 Topic: Integrals - Entry under the differential sign. Complex spreadsheet formulas.
Fundamentals of Higher Mathematics
Lesson-86 Topic: Integrals - Entry under the differential sign. Complex spreadsheet formulas.

In this lesson, you will learn how to calculate integrals by putting expressions under the differential sign.

Lesson-87 Topic: Integrals: Integration by Parts.
Fundamentals of Higher Mathematics
Lesson-87 Topic: Integrals: Integration by Parts.

In this lesson, you will learn the technique of integration by parts, including the formula and step-by-step process for solving integrals of products of functions.

Lesson-88 Topic: Integrals. Substitution Method.
Fundamentals of Higher Mathematics
Lesson-88 Topic: Integrals. Substitution Method.

In this lesson, you will learn the substitution method for solving integrals. You will explore how to simplify complex integrals by substituting variables and using this technique to evaluate integrals more easily.

Lesson-89 Topic: Integrals: Method of Undetermined Coefficients.
Fundamentals of Higher Mathematics
Lesson-89 Topic: Integrals: Method of Undetermined Coefficients.

In this lesson, you will learn the method of undetermined coefficients for solving integrals, particularly focusing on finding specific solutions to integrals involving non-homogeneous functions.

Lesson-90 Topic: Integrals and Improper Integrals.
Fundamentals of Higher Mathematics
Lesson-90 Topic: Integrals and Improper Integrals.

In this lesson, you will dive into the fundamentals of integrals, covering both definite and indefinite types. You will also explore improper integrals, understand their unique properties, and learn how to evaluate them using practical examples.

Lesson-91 Topic: Polar Coordinates.
Fundamentals of Higher Mathematics
Lesson-91 Topic: Polar Coordinates.

In this lesson, you will learn how to represent points and equations using polar coordinates. We will cover the differences from Cartesian coordinates and key concepts with examples.

Lesson-92 Topic: Applications of Integration.
Fundamentals of Higher Mathematics
Lesson-92 Topic: Applications of Integration.

In this lesson, you will explore the practical applications of integration in geometry, physics, and economics. Learn how to solve real-world problems using integral techniques.

Lesson-93 Topic: Solving Various Integral Problems.
Fundamentals of Higher Mathematics
Lesson-93 Topic: Solving Various Integral Problems.

In this lesson, you will practice solving various integral problems using different techniques. Focus on applying methods like substitution, integration by parts, and partial fractions.

Lesson-94 Topic: Series and Summation with Sigma Notation.
Fundamentals of Higher Mathematics
Lesson-94 Topic: Series and Summation with Sigma Notation.

In this lesson, you will learn about numerical series and how to represent sums using sigma notation. We will cover common types of series and summation techniques.

Lesson-95 Topic: Introduction to Integral Equations.
Fundamentals of Higher Mathematics
Lesson-95 Topic: Introduction to Integral Equations.

In this lesson, you will learn the basics of integral equations and their classifications. We will also discuss methods for solving them with practical examples.

Lesson-96 Topic: Second-Order Curves.
Fundamentals of Higher Mathematics
Lesson-96 Topic: Second-Order Curves.

In this lesson, you will explore second-order curves such as ellipses, hyperbolas, and parabolas. Learn their standard equations and key properties.

Geometry. Planimetry
Lesson-1 Topic: Basic Concepts of Geometry: Lines, Segments, and Angles.
Free
Geometry
Lesson-1 Topic: Basic Concepts of Geometry: Lines, Segments, and Angles.

In this lesson, you will explore the foundational concepts of geometry, including the properties of lines and segments, types of angles, and their relationships in geometric figures.

Free
Lesson-2 Topic: Types of Triangles, Internal Lines, and Triangle Properties.
Geometry
Lesson-2 Topic: Types of Triangles, Internal Lines, and Triangle Properties.

In this lesson, you will study the types of triangles, learn about their internal lines (height, median, bisector, and midline), understand the conditions for triangle existence, and calculate their perimeter.

Lesson-3 Topic: Right Triangles: Properties and the Pythagorean Theorem.
Geometry
Lesson-3 Topic: Right Triangles: Properties and the Pythagorean Theorem.

In this lesson, you will explore the properties of right triangles, learn the rules governing them, and solve problems using the Pythagorean Theorem.

Lesson-4 Topic: Sine, Cosine, Tangent, and Cotangent in Right Triangles.
Geometry
Lesson-4 Topic: Sine, Cosine, Tangent, and Cotangent in Right Triangles.

This lesson introduces the fundamental trigonometric ratios—sine, cosine, tangent, and cotangent—in the context of right triangles, along with their applications in solving problems.

Lesson-5 Topic: Mean Proportionals: Concepts and Problem Solving.
Geometry
Lesson-5 Topic: Mean Proportionals: Concepts and Problem Solving.

In this lesson, you will learn the concept of mean proportionals and practice solving problems involving their application in geometric and algebraic contexts.

Lesson-6 Topic: Area of a Right Triangle.
Geometry
Lesson-6 Topic: Area of a Right Triangle.

In this lesson, you will learn how to calculate the area of a right triangle using its base and height, and explore related problems for practice.

Lesson-7 Topic: Law of Cosines and Problems on it.
Geometry
Lesson-7 Topic: Law of Cosines and Problems on it.

In this lesson, you will learn the Law of Cosines, its formula, and how to apply it to solve problems involving triangles, including finding unknown sides and angles.

Lesson-8 Topic: Law of Sines and problems on it.
Geometry
Lesson-8 Topic: Law of Sines and problems on it.

In this lesson, you will explore the Law of Sines, its formula, and how to apply it to solve problems involving triangles, including finding unknown sides and angles in non-right triangles.

Lesson-9 Topic: Isosceles and Equilateral Triangles. Problems on them.
Geometry
Lesson-9 Topic: Isosceles and Equilateral Triangles. Problems on them.

In this lesson, you will learn the unique properties of isosceles and equilateral triangles and practice solving problems involving their angles, sides, and symmetry.

Lesson-10 Topic: Median of a triangle and problems on it.
Geometry
Lesson-10 Topic: Median of a triangle and problems on it.

In this lesson, you will explore the concept of a triangle’s medians, their properties, and how to solve problems involving medians in various types of triangles.

Lesson-11 Topic: Bisectors of a Triangle: Properties and Problems.
Geometry
Lesson-11 Topic: Bisectors of a Triangle: Properties and Problems.

In this lesson, you will learn about the properties of a triangle’s bisectors, their significance, and practice solving problems involving bisectors in different types of triangles.

Lesson-12 Topic: Simple and Medium Problems on the Area of a Triangle.
Free
Geometry
Lesson-12 Topic: Simple and Medium Problems on the Area of a Triangle.

In this lesson, you will work through simple to medium-level problems on calculating the area of a triangle, applying different methods such as basic area formulas and more complex techniques like Heron's formula.

Free
Lesson-13 Topic: Medium and Hard Problems on the Area of a Triangle.
Geometry
Lesson-13 Topic: Medium and Hard Problems on the Area of a Triangle.

In this lesson, you will tackle medium to hard-level problems involving the calculation of a triangle’s area, using advanced methods such as Heron’s formula, trigonometric approaches, and special properties of triangles.

Lesson-14 Topic: Incircle of a Triangle, and problems on it.
Geometry
Lesson-14 Topic: Incircle of a Triangle, and problems on it.

In this lesson, you will learn about the incircle of a triangle, its properties, and how to solve problems related to the incenter, radius, and area involving the incircle.

Lesson-15 Topic: Excircle of a Triangle and Problems on It.
Geometry
Lesson-15 Topic: Excircle of a Triangle and Problems on It.

In this lesson, you will explore the concept of an excircle of a triangle, its properties, and practice solving problems related to the excenter, radius, and area involving the excircle.

Lesson-16 Topic: Congruence and Similarity of Triangles and Problems on It.
Geometry
Lesson-16 Topic: Congruence and Similarity of Triangles and Problems on It.

In this lesson, you will explore the concepts of congruence and similarity of triangles, their properties, and practice solving problems related to these topics.

Lesson-17 Topic: General Concepts and Rules of Quadrilaterals: Types and Problem Solving.
Geometry
Lesson-17 Topic: General Concepts and Rules of Quadrilaterals: Types and Problem Solving.

In this lesson, you will learn the fundamental concepts and rules of quadrilaterals, explore their various types, and solve problems to deepen your understanding of their properties.

Lesson-18 Topic: Rectangles, Squares, and Problems on Them.
Geometry
Lesson-18 Topic: Rectangles, Squares, and Problems on Them.

In this lesson, you will study the properties of rectangles and squares, learn their formulas for perimeter and area, and practice solving related problems.

Lesson-19 Topic: The Rhombus and Problems on It.
Geometry
Lesson-19 Topic: The Rhombus and Problems on It.

In this lesson, you will explore the properties of a rhombus, including its diagonals, angles, and formulas for perimeter and area, and practice solving related problems.

Lesson-20 Topic: Parallelograms and Problems on Them.
Geometry
Lesson-20 Topic: Parallelograms and Problems on Them.

In this lesson, you will study the properties of parallelograms, including their sides, angles, and diagonals, and practice solving problems involving perimeter, area, and other key characteristics.

Lesson-21 Topic: Trapeziums and Problems on Them.
Geometry
Lesson-21 Topic: Trapeziums and Problems on Them.

In this lesson, you will learn about the properties of trapeziums, including their bases, heights, and midlines, and practice solving problems involving their perimeter, area, and other related concepts.

Lesson-22 Topic: Circumscribed and Inscribed Circles in Quadrilaterals: Cyclic Quadrilaterals.
Geometry
Lesson-22 Topic: Circumscribed and Inscribed Circles in Quadrilaterals: Cyclic Quadrilaterals.

In this lesson, you will explore the properties of circumscribed and inscribed circles in quadrilaterals, with a focus on cyclic quadrilaterals, and practice solving related geometric problems.

Lesson-23 Topic: Circles Circumscribed Around a Trapezoid.
Geometry
Lesson-23 Topic: Circles Circumscribed Around a Trapezoid.

This lesson covers the conditions for a circle to be circumscribed around a trapezoid, its properties, and solving problems involving such trapezoids.

Lesson-24 Topic: Circles: Circumferences, Arcs, Sectors, Segments, Central and Inscribed Angles.
Geometry
Lesson-24 Topic: Circles: Circumferences, Arcs, Sectors, Segments, Central and Inscribed Angles.

In this lesson, you will explore the key properties of circles, including circumferences, arcs, sectors, and segments, as well as central and inscribed angles, and solve problems involving these concepts.

Lesson-25 Topic: Tangents, Secants, Chords, and Relative Positions of Two Circles.
Geometry
Lesson-25 Topic: Tangents, Secants, Chords, and Relative Positions of Two Circles.

This lesson covers the properties of tangents, secants, and chords in circles, explores the relative positions of two circles, and provides practice through problem-solving.

Geometry. Stereometry
Lesson-26 Topic: Basic Rules of Stereometry and the Theorem of Three Perpendiculars.
Free
Geometry
Lesson-26 Topic: Basic Rules of Stereometry and the Theorem of Three Perpendiculars.

In this lesson, you will learn the foundational rules of stereometry, explore the Theorem of Three Perpendiculars, and solve problems applying these concepts to three-dimensional geometric figures.

Free
Lesson-27 Topic: Oblique and Perpendicular Lines, Projections onto a Plane and Related Problems.
Geometry
Lesson-27 Topic: Oblique and Perpendicular Lines, Projections onto a Plane and Related Problems.

In this lesson, you will study the properties of oblique and perpendicular lines, learn about projections onto a plane, and solve related geometric problems involving these concepts.

Lesson-28 Topic: Prism and Parallelepiped and Problems Involving Them.
Geometry
Lesson-28 Topic: Prism and Parallelepiped and Problems Involving Them.

In this lesson, you will learn about the properties of prisms and parallelepipeds, including their volume, surface area, and other key features, and solve problems involving these 3D geometric shapes.

Lesson-29 Topic: Pyramid and Problems Involving It.
Geometry
Lesson-29 Topic: Pyramid and Problems Involving It.

In this lesson, you will explore the properties of pyramids, including their volume, surface area, and other key characteristics, and solve problems related to pyramids in 3D geometry.

Lesson-30 Topic: Cone, Cylinder, and Sphere and Problems Involving Them.
Geometry
Lesson-30 Topic: Cone, Cylinder, and Sphere and Problems Involving Them.

In this lesson, you will study the properties of cones, cylinders, and spheres, including their volume and surface area formulas, and solve problems involving these 3D geometric shapes.

Lesson-31 Topic: Truncated Pyramid and Truncated Cone and Problems Involving Them.
Geometry
Lesson-31 Topic: Truncated Pyramid and Truncated Cone and Problems Involving Them.

In this lesson, you will explore the geometric properties of truncated pyramids and truncated cones, learn their volume and surface area formulas, and practice solving related problems.

Lesson-32 Topic: Spheres Inscribed and Circumscribed Around Prism and Problems Involving Them.
Geometry
Lesson-32 Topic: Spheres Inscribed and Circumscribed Around Prism and Problems Involving Them.

This lesson focuses on the conditions and properties of spheres inscribed in and circumscribed around prisms. You will also solve problems involving these geometric relationships.

Lesson-33 Topic: Spheres Inscribed and Circumscribed Around Pyramids, and Problems Involving Them.
Geometry
Lesson-33 Topic: Spheres Inscribed and Circumscribed Around Pyramids, and Problems Involving Them.

In this lesson, you will explore the properties and conditions of spheres inscribed in and circumscribed around pyramids and solve problems related to these geometric configurations.

Lesson-34 Topic: Construction of Sections in Stereometry and Problems on Sections.
Geometry
Lesson-34 Topic: Construction of Sections in Stereometry and Problems on Sections.

In this lesson, you will learn how to construct sections of three-dimensional geometric figures and practice solving problems related to these sections, enhancing your spatial reasoning skills.

Lesson-35 Topic: Distance and Angles in Space: Key Concepts and Problem Solving.
Geometry
Lesson-35 Topic: Distance and Angles in Space: Key Concepts and Problem Solving.

This lesson covers the methods for finding the distance between two points in space, the distance from a point to a plane, and the angle between lines in space. You will also solve related problems to deepen your understanding of these concepts.

Lesson-36 Topic: Angle Between a Line and a Plane in Space.
Geometry
Lesson-36 Topic: Angle Between a Line and a Plane in Space.

In this lesson, you will explore the method for determining the angle between a line and a plane in space, and practice solving problems to apply this concept in various geometric contexts.

Lesson-37 Topic: Angle Between Planes in Space.
Geometry
Lesson-37 Topic: Angle Between Planes in Space.

This lesson focuses on understanding how to calculate the angle between two planes in space. You will explore key concepts and solve problems to apply this knowledge in stereometry.

Lesson-38 Topic: Distance Between Skew Lines in Space.
Geometry
Lesson-38 Topic: Distance Between Skew Lines in Space.

In this lesson, you will learn how to calculate the distance between skew lines in space, explore the geometric principles behind this concept, and solve related problems to deepen your understanding.

Lesson-39 Topic: Applications of Derivatives in Geometry.
Geometry
Lesson-39 Topic: Applications of Derivatives in Geometry.

This lesson covers the application of derivatives in geometry, including how they are used to find slopes, tangents, normals, and other key geometric properties. You will practice solving problems related to these concepts.

Lesson-40 Topic: Vectors and Problems Involving Them.
Geometry
Lesson-40 Topic: Vectors and Problems Involving Them.

In this lesson, you will explore the concept of vectors, their properties, and operations such as addition, subtraction, and scalar multiplication. You will also practice solving problems related to vectors in both two and three dimensions.

Lesson-41 Topic: Application of the Coordinate Method in Stereometry.
Geometry
Lesson-41 Topic: Application of the Coordinate Method in Stereometry.

This lesson focuses on using the coordinate method to solve stereometry problems. You will learn how to apply coordinates in three-dimensional space to find distances, angles, and other geometric properties of 3D figures.

Lesson-42 Topic: Analytic Geometry in Space: Planes and Other Elements.
Geometry
Lesson-42 Topic: Analytic Geometry in Space: Planes and Other Elements.

In this lesson, you will explore the fundamentals of analytic geometry in three-dimensional space. Topics include equations of planes, lines, and other geometric elements in space, with problem-solving exercises to apply these concepts.