CosX^2dx 的不定积分怎么求啊
问题描述:
CosX^2dx 的不定积分怎么求啊
答
=1/2∫(1+cos2x)dx
=1/2∫1dx+1/2∫cos2xdx
=1/2x+1/4∫cos2xdx
=1/2x+1/4sin2x+C