e. f(x) = (x2 +2x)"(x-1)3 xZ-l f' foc): x+2 g, y = xw/(x3 + 5x) h. f(x) = 1 + cos2 (3x) 1'. f(x) = sin4 (4x2 -- 6x +1) cot x 1: = y xz k f(x) = x2 tanx7. l-I f(x) =sm ' (4x" -0x + l) cotx 1- y: xz k. f(x) = x2 tanx Use the definition of derivative to find the derivative of the foiiow'mg: a. f(x)=3x2 -x+2 2 b' f(x)=x+5 C f(x)= x+l