求积分∫sin^2x cos^2x
问题描述:
求积分∫sin^2x cos^2x
答
∫sin^2x cos^2xdx
=(1/4)∫(sin2x)^2dx
=(1/8)∫(1-cos4x)dx
=(1/8)[x-(1/4)sin4x]+C
=x/8-sin4x/32+C