71/1000, limits from a graph

126/1000, how to evaluate a limit with just algebra

114/1000, 3 rectangles under y=1/x from 1 to 2

82/1000, know the chain rule for derivatives!

Integral Calculus Explained: A Simple Math Guide

121/1000, derivative of sin^-1(x), implicit differentiation

103/1000, a calculus problem without using calculus

79/1000, surface area of revolution, calculus 2

88/1000, 1-1/2+1/3-1/4+...=? (alternating harmonic series)

68/1000, midpoint rule approximation for the integral of sqrt(1+x^3) from 0 to 2

75/1000, why dxdy=rdrdθ, computing the Jacobian, calculus 3

61/1000, integral of sqrt(x) from 1 to 9

64/1000, solving dy/dx=y, separable differential equation

Why is the Derivative of Cosine Negative Sine? A Visual Explanation