MCQ
$\int \frac{1}{x^{2}+2 x+2} d x $ बराबर है:
- Atan$^{-1}$ x + C
- B(x + 1) tan$^{-1}$ x + C
- Cx tan$^{-1}$ (x + 1) + C
- ✓tan$^{-1}$ (x + 1) + C
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