pi -- 4 / | | 2 | x *sin(x)*cos(2*x) dx | / -pi ---- 4
Integral((x^2*sin(x))*cos(2*x), (x, -pi/4, pi/4))
/ | 3 / 3 \ 3 2 2 | 2 28*cos (x) 2 | 2*cos (x) | 8*x*sin (x) 8*sin (x)*cos(x) 4*x*cos (x)*sin(x) | x *sin(x)*cos(2*x) dx = C - 2*cos(x) + ---------- + x *|- --------- + cos(x)| - 2*x*sin(x) + ----------- + ---------------- + ------------------ | 27 \ 3 / 9 9 3 /
Use the examples entering the upper and lower limits of integration.