MCQ
$\int\frac{2\text{dx}}{\sqrt{1-4\text{x}^2}}=$
- A$\tan^{-1}(2\text{x})+\text{c}$
- B$\cot^{-1}(2\text{x})+\text{c}$
- C$\cos^{-1}(2\text{x})+\text{c}$
- ✓$\sin^{-1}(2\text{x})+\text{c}$
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