∫[sin(2x+л/4]^-2 dx
问题描述:
∫[sin(2x+л/4]^-2 dx
答
∫[sin(2x+л/4)]^-2 dx
=0.5 ∫[csc(2x+л/4)]^2 d(2x+л/4)
=-0.5 cot(2x+л/4)+ C