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Qn #1564
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If $ \int \frac{xe^{x}}{\sqrt{1+e^{x}}}=f(x)\sqrt{1+e^{x}}-2log \frac{\sqrt{1+e^{x}}-1}{\sqrt{1+e^{x}}+1}+C$ then $f(x)$ is
A.
$2x-1$
B.
$2x-4$
C.
$x+4$
D.
$x-1$
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❓ Question: If $ \int \frac{xe^{x}}{\sqrt{1+e^{x}}}=f(x)\sqrt{... | TANCET Group Studies | Tancet Group Studies