Resources

Cheat sheets, formulas, and practice problems to master mathematics

Popular Formulas

Pythagorean Theorem

In a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides.

a2+b2=c2a^2 + b^2 = c^2

Quadratic Formula

Solves equations of the form ax2+bx+c=0ax^2 + bx + c = 0

x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

Euler's Identity

One of the most beautiful equations in mathematics, connecting five fundamental constants.

eiπ+1=0e^{i\pi} + 1 = 0

Fundamental Theorem of Calculus

Links differentiation and integration as inverse operations.

∫abf(x)dx=F(b)−F(a)\int_a^b f(x)dx = F(b) - F(a)

Downloadable Cheat Sheets

Calculus

Calculus Formulas

Derivatives, integrals, and key theorems

Trigonometry

Trigonometry Guide

Identities, unit circle, and graphs

Algebra

Algebra Essentials

Factoring, equations, and functions

Linear Algebra

Linear Algebra

Matrices, vectors, and transformations

Statistics

Statistics Basics

Probability, distributions, and inference

Geometry

Geometry Formulas

Areas, volumes, and theorems

Practice Quiz

Calculus & Algebra Quiz

Question 1 of 3EASY
ddx(x2)=?\frac{d}{dx}(x^2) = ?