The following is Mobius' explanation for a solution to this question. You can use this and other online references as a guide, but your explanation should be in your own words. The derivative of a function of f at a is given by f' (ac) = lim f(xth)-f(x) h-0 h provided the limit exists. Use the definition of the derivative to find the derivative of f (ac) = 4x2 + 8ac + 4. Enter the fully simplified expression for f (a + h) - f (a). Do not factor. Make sure there is a space between variables. f(ath) - f(2) = f (2) = 8*X+8 M