16-15-14-13-12-11 -10 -9 -8 -7 -6 5 4 -3 -2 1 1 D 3 5 8/9 10 11 12 The curve above is the graph of a sinusoidal function. It goes through the points ( -12, 0) and (2, 0). Find a sinusoidal function that matches the given graph. If needed, you can enter =3.1416... as 'pi in your answer, otherwise use at least 3 decimal digits. f(x) = =