Editor
$\int \frac{1}{\sqrt{x}(\sqrt{x}+1})dx$ equals:
Difficulty: Easy
A: 
$ln(\sqrt{x}+1)$
B: 
$2ln(\sqrt{x}+1)$
C: 
$\frac{\sqrt{x}}{(\sqrt{x}+1)}$
D: 
$\frac{ln\sqrt{1}}{x+1}$
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