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 (z) = lim f(Ith)-f(z) h-0 h provided the limit exists. Use the definition of the derivative to find the derivative of f (r) = 4x2 + 6x + 4 Enter the fully simplified expression for f (x + h) - f (). Do not factor Make sure there is a space between variables f ( z t h) - f (z) = f ( I ) = Show your work and explain, in your own words, how you arrived at your answers