MCQ
$\int \frac{ dx }{x^2+4 x+13}=?$
- A$\frac{1}{6} \tan ^{-1}\left(\frac{x+2}{3}\right)+ C$
- B$3 \tan ^{-1}\left(\frac{x+2}{3}\right)+C$
- C$\frac{1}{6} \log \left(\frac{x-1}{x+5}\right)+ C$
- ✓$\frac{1}{3} \tan ^{-1}\left(\frac{x+2}{3}\right)+C$
✓
Answer
Correct option: D.
$\frac{1}{3} \tan ^{-1}\left(\frac{x+2}{3}\right)+C$
D
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