56-59. Functions from derivatives Use the derivative f' to determine the x-coordinates of the local maxima and minima of f, and the inter vals on which f is increasing or decreasing. Sketch a possible graph of f (f is not unique). (x-1)(x+2)(x+4) 56. f'(x) 57. f'(x) = 10 sin 2x on (-2, 2] 58. f'(x) = (x + 1)(x-2)2(x-3) B 59. f'(x) x2(x+2)(x 1) -