求积分:∫dx/sin2x+2sinx
问题描述:
求积分:∫dx/sin2x+2sinx
sin2x+2sinx是分母
答
=0.25*[1/(cosx+1)+0.5*ln(|(1-cosx)/(1+cosx)|)]
求积分:∫dx/sin2x+2sinx
sin2x+2sinx是分母
=0.25*[1/(cosx+1)+0.5*ln(|(1-cosx)/(1+cosx)|)]