(1 point) Let 6x - 9x2 for x

(1 point) Let 6x 9x2 for x < 0 , f(x) = 6x2 + 6x for x 2 0 . According to the definition of the derivative, to compte f we need to compute the left-hand limit , which is and the right-hand limit , which is We conclude that f '(O) is Note: If a limit or derivative is undefined, enter 'undefinedl as your answer.