**The limit, as h approaches 0, of {(2 + h)**

^{3}- 8} / h represents the derivative of some f(x) at some point a. Find f(x) and a.Since 2

^{3}= 8, and since the formula for f'(x) is {f(x + h) - f(x)} / h as h goes to 0, is this just f(x) = x

^{3}with a = 2?