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

67/1000, derivative & integral of 67

Why Integration and Differentiation Undo each other? (Proof of the Fundamental theorem of calculus)

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

40/1000, derivative of ln(x+sqrt(x^2+1)), calculus 1

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

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

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