MCQ
$\int \frac{2 d x}{\sqrt{x}(x+9)}=$
- A$\tan ^{-1} \sqrt{x}+c$
- B$\tan ^{-1}\left(\frac{\sqrt{x}}{3}\right)+c$
- C$\frac{2}{3} \tan ^{-1}(\sqrt{x})+c$
- ✓$\frac{2}{3} \tan ^{-1}\left(\frac{\sqrt{x}}{3}\right)+c$
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