0 / | | 4*sin(x)*-6*sin(x) dx | / pi -- 2
Integral((4*sin(x))*(-6*sin(x)), (x, pi/2, 0))
/ | 2 2 | 4*sin(x)*-6*sin(x) dx = C - 12*x*cos (x) - 12*x*sin (x) + 12*cos(x)*sin(x) | /
6*pi
=
18.8495559215388
Use the examples entering the upper and lower limits of integration.