MCQ
$\int \sqrt{a^2-x^2} d x=$
- A$\frac{x}{2} \sqrt{a^2-x^2} d x$
- B$\frac{a^2}{2} \sin ^{-1} \frac{x}{a}+c$
- ✓$\frac{x}{2} \sqrt{a^2-x^2}+\frac{a^2}{2} \sin ^{-1} \frac{x}{a}+c$
- D$\frac{x}{2} \sqrt{x^2-a^2}-\frac{a^2}{2} \sin ^{-1} \frac{x}{a}+c$
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