The derivative of pi is 0, as pi is a constant. Pi is an irrational number with an approximate value of 3.14, and it does not change with respect to a variable. Therefore, the derivative of any expression involving pi, such as pi^2, pi/2, or pi/6, is also 0. However, if pi is part of a function with a variable, such as y = pi^2x, then the derivative of y with respect to x is 2pi^2.