1. The problem statement, all variables and given/known data Given the function f(x)= x(x^2-8)-5 satisfies the hypothesis of the Mean Value Thereom on the interval [1,4], find a number C in the interval (1,4) which satisfies this thereom. 2. Relevant equations f'(c) = f(b)-f(a) / b-a 3. The attempt at a solution 1) Expand the equation first 2) Find the first derivative. 3) Equal the equation to 1 Apparently, I got the wrong answer. What am I doing wrong? PLEASE HELP.