The Magic of Calculus

Differential and Integral Calculus by Feliciano and Uy

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

63/1000, limit of x^x as x goes to 0+, calculus 1

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