1 / | | 3 | cos (-4*x)*sin(4*x) dx | / 0
Integral(cos(-4*x)^3*sin(4*x), (x, 0, 1))
4 1 cos (4) -- - ------- 16 16
=
1/16 - cos(4)^4/16
0.0510910907465456
Use the examples entering the upper and lower limits of integration.