What happens to the maximum velocity if you double both Amplitude and period of a SHM

1. Apr 14, 2005

what happens to the maximum velocity if you double both Amplitude and period of a SHM?

the equation is

x(t) = A cos (wt + f)
v(t) = -A w sin (wt + f)

f is phase constant, w = angular velocity

i know if i double A and T, the first part of the v(t) equation will be like:
-2A * 2pi/2T = -A * w, not changed, but what about that part in the sine ???