A. Choose a composite square root function of the form (3 a f )(x) where the function g is a square root function and f is any polynomial function more complicated than y = ax. a c R. Note: An example of an appropriate composite square root function would be (g f )(x) = 42x 3. However, you must pick a function other than this example for this task. L Show the step-by-step computation of the correct derivative of (g o f )(x) using the chain rule. A Using the function (g o f )(x) you constructed for part A, nd the instantaneous rate of change at x = 0.123