the integral of 16 cos^4 theta -1 d(theta).
Thank you very much.
Thank you very much for your reply.
Let me give you the exact question with the range.
evaluate 1/4 times the double integral ( from 0 to pi/3) of 16 cos^4 theta -1 d(theta). Could you please show me the final answer with detail steps . Thanking you in advance.