For example, for the function f(x) - x?, we have f(x + h) = (x + h)? , and so the difference quotient is f(x th) - f(z) (xth)2 -12 x2 + 2xh +h2 - 22 2ch + h2 h(2x + h) 2x + h h h h h h Typically, we use this expression in the simplified form after possible cancellations. For the function f(x) - -8x , calculate the difference quotient and then evaluate at h = 0. Enter your answer here: sin (a) f