Compare the functions below: f(x) = 3 cos(2x − π) − 1 g(x) trig graph with points at 0, 0 and pi over 2, 3 and pi, 0 and 3 pi over 2, negative 3 h(x) = sin x − 4 which function has the smallest rate of change from x = 0 to x = pi over 2?