∫cosx - xsinx + 3x2scosx + x3dx= কত ?
A
sin x + x cos xx sin x + 3x +c
B
logx3 + xcosx+c
C
logsin x + x cos xx2 + x sin x +c
D
logsin x + x cos xx2 + x sin x
Correct Answer: logx3 + xcosx+c