∫1/根号xsin(3根号x+2)dx
问题描述：
∫1/根号xsin(3根号x+2)dx
答
解
∫1/√xsin(3√x+2)dx
=2/3∫sin(3√x+2)d(3√x+2)
=2/3∫sinudu
=-2/3cosu+C
=-2/3cos(3√x+2)+C