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\int \frac{x e^{x}}{(x + 1)^{2}} = f (x) + c

f (x) = ?

x e^{x}

\frac{x e^{x}}{x + 1}

\frac{e^{x}}{x + 1}

e^{x} 1 n (x + 1)

ANS : 3

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