Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
$\int_{0}^{1} \sin ^{-1}\left(\frac{2 x}{1+x^{2}}\right) d x=?$
A. $\frac{1}{2}(\pi-\log 2)$
B. $\left(\frac{\pi}{2}-\log 2\right)$
C. $(\pi-2 \log 2)$
D. none of these
Solution:
