# Revision history [back]

I just found out how to solve the problem, I just changed the first command to

a = animate([sin(20(x - float(k)))/x for k in srange(0,2pi,0.5)], xmin=1, xmax=4, ymin=-1, ymax=1)

a = animate([sin(20(x animate([sin(20*(x - float(k)))/x for k in srange(0,2pi,0.5)], srange(0,2*pi,0.5)],              xmin=1, xmax=4, ymin=-1, ymax=1) 


ymax=1)