Integration
Calculus
Level
2
Evaluate
\[ \int_0^1 \sqrt{ \frac{1-x}{1+x} } \, dx. \]
A. \( \frac{\pi}{2} +1 \)
B. \( \frac{ \pi}{2} - 1 \)
C. -1
D. 1
by
Arpit Dhimanj