1 / | 2 2 | 2 1 cos (1) sin (1) cos(1)*sin(1) | x*cos (x) dx = - - + ------- + ------- + ------------- | 4 2 4 2 / 0
0.300306002138028
/ | 2 2 2 2 2 | 2 sin (x) x *cos (x) x *sin (x) x*cos(x)*sin(x) | x*cos (x) dx = C - ------- + ---------- + ---------- + --------------- | 4 4 4 2 /