Pythagorean Theorem: Formula, Proof and Examples
The Pythagorean theorem a² + b² = c² explained: finding the hypotenuse or a leg, a visual proof, Pythagorean triples, the converse, 3D and real-world examples.
Month: October 2026
Read article → Pythagorean Theorem: Formula, Proof and Examples
Projectile Motion: Equations, Range and Max Height
Projectile motion explained: velocity components, time of flight, range, maximum height and the parabolic path, with calculus derivations and examples.
Precalculus: What It Covers and What You Need for Calculus
What precalculus covers (functions, polynomials, exponentials, logs, trig, sequences), how hard it is, and a study plan with free guides and calculators.
Polynomials: Definition, Degree, Zeros and Graphs Explained
What a polynomial is, degree and leading coefficient, finding zeros by factoring, the rational root test and synthetic division, and end behavior.
Polar Coordinates and Polar Equations: Graphs, Area, Slope
Polar coordinates explained: polar-rectangular conversion, graphing polar equations (circles, cardioids, roses), slope, area and arc length.
Percentage Formula: How to Calculate Percentages
The percentage formula: percent of a number, what percent one number is of another, percent change, percent error and reverse percentages.
Ncert Maths Books for Class 11 and 12 (Official PDFs)
Where to get the official NCERT Class 11 and Class 12 maths textbook PDFs free, the full chapter list, and a free study guide for each chapter.
Multivariable Calculus: An Introduction with Examples
What multivariable calculus covers: functions of several variables, vectors and projection, partial derivatives, gradients and multiple integrals.
Mean, Median and Mode: Definitions, Formulas and Examples
What mean, median, mode and range are, how to find each (even-sized data and frequency tables), and when to use which average.
Matrix Multiplication, Determinant and Inverse Explained
How to multiply matrices (row times column), when it is possible, 2×2 and 3×3 determinants, the inverse matrix and solving systems.