67/1000, derivative & integral of 67

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

66/1000, derivative of e^(ax)*sin(bx), product rule and chain rule, calculus 1

The Magic of Calculus

Differential and Integral Calculus by Feliciano and Uy

65/1000, vertex formula of a parabola y=ax^2+bx+c using calculus

Furry teaches you Limits and Continuity - Calculus 1

42/1000, epsilon-delta proof of a limit, calculus 1

I thought this was a nice limit (and I made it even better)

47/1000, limit of (1-2/x)^x, calculus 1

3 Levels of Factoring #maths

Big new result in Ramsey Theory - is this the Golden Age of Mathematics?