3.1. For the function f(x) = x(x - 75), approximate the derivative f'(-3) with the help c small intervals 3.1.1. Recall: f'(x) = f(x+h)-f(x) h X 3.2.1. -3 -3 -3 h 1 .1 .01 .001 0.0001 x + h -3 -3 3.2. Use the rules for fast differentiation to calculate the derivative f'(x) Calculate f'(-3) = f(x+h)-f(x) h f'(x) =