Mark against the correct answer in each of the following:
Question:

Mark $(\sqrt{ })$ against the correct answer in each of the following:

$\int \frac{e^{x}}{\sqrt{1+e^{x}}} d x=?$

A. $2 \sqrt{1+\mathrm{e}^{\mathrm{x}}}+\mathrm{C}$

B. $\frac{1}{2} \sqrt{1+e^{x}}+C$

C. $\frac{1}{\sqrt{1+\mathrm{e}^{x}}}+C$

D. none of these

 

Solution:

 

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