Calculus: We introduce the technique of integration by substitution for indefinite integrals. This is an integration method that reverses the chain rule for derivatives.
Examples include (a) int x(1+x^2)^3 dx, (b) int x^6 cos(2x^7) dx, (c) int sin(x)cos(x) dx, and (d) int x(1+x)^2 dx. In problem (c), we recall an occasional problem with integrals, and, in problem (d), we show an instance where re-substitution is required.
In this second chapter of a series of calculus lessons, Dr. Bob covers integral calculus, including topics such as: Antiderivatives, Area, Definite Integrals, Fundamental Theorems of Calculus, Integration by Substitution, Trapezoid and Simpson's Rules. This series has 39 lessons, and it is a continuation of Part I: Limits and Derivatives.