MCQ
$\int \frac{d x}{x^2+5}$
- A$\tan ^{-1} \frac{x}{5}+k$
- B$\tan ^{-1} \frac{x}{\sqrt{5}}+k$
- ✓$\frac{1}{\sqrt{5}} \tan ^{-1} \frac{x}{\sqrt{5}}+k$
- D$\sqrt{5} \tan ^{-1} \frac{x}{\sqrt{5}}+k$
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