5. (5 marks). Let f(x) = T (a) (1 mark). Use the limit definition of derivative to find f'(x). (b) (1 mark). Verify your answer to (a) using the Power Rule. (c) (3 marks). Use the Power Rule to find f"(x), f"(x) and f(4) (x). Find a pattern in the derivatives and make a conjecture for a formula for f() (x), the nth derivative of f(x)