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

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

62/1000, finding the 20th derivative of e^(2x)

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

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

38/1000, don't get these derivatives wrong! calculus 1

37/1000, telescoping series, calculus 2

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