2*pi ---- w / | | sin(2*w)*t*sin(2*w)*t dt | / 0
Integral(((sin(2*w)*t)*sin(2*w))*t, (t, 0, 2*pi/w))
/ 3 2 | t *sin (2*w) | sin(2*w)*t*sin(2*w)*t dt = C + ------------ | 3 /
3 2
8*pi *sin (2*w)
---------------
3
3*w
=
3 2
8*pi *sin (2*w)
---------------
3
3*w
8*pi^3*sin(2*w)^2/(3*w^3)
Use the examples entering the upper and lower limits of integration.