How to overlap the polar plot in the same figure

hello,i am a new user in the matlab programe,i want to do a polar plot which is the polar plot must be overlapped in the same figure but i still didn't get the commands how to do it,anyone can help me to solve my prob or give some references link related to my question,thanks..

Answer 1

[Fangjun Jiang]

hold on?

t = 0:.01:2*pi;
polar(t,sin(2*t).*cos(2*t),'--r')
hold on;
polar(t,sin(t).*cos(t),'.b')

[cheng]

can u show me some example?

[Walter Roberson]

That *is* an example.