∫(1/(√x (1+x))) dx等于?
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∫(1/(√x (1+x))) dx等于?
∫(1/(√x (1+x))) dx等于?
∫(1/(√x (1+x))) dx等于?
设√x=t,则x=t²,dx=2tdt
∴原式=2∫dt/(1+t²)
=2arctant+C (C是积分常数)
=2arctan(√x)+C