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