This document covers derivatives of various functions including: 1) Constant functions have a derivative of 0 since their graph is a horizontal line with zero slope. 2) The power rule states that the derivative of x^n is nx^{n-1}. This can be used to take derivatives of polynomials by applying the constant multiple, sum, and difference rules. 3) Exponential functions like e^x have a derivative of the original function. Higher derivatives are obtained by repeatedly taking derivatives, with the nth derivative denoted as f^(n).