Let f(x) = I Then the expression f(x+h)-f(x) h where A is a constant and A Using your answer from above we have: f(x+h)-f(x) h f'(x) = lim A-+0 Finally, find each of the following: f'(1) = f'(2)= f'(3) = can be written in the form A x(x + h)'