Indefinite Integration

$\frac{-\mathrm{e}^x}{(x+1)^2}+C$, (where $C$ is a constant of integration)

$\frac{-x \mathrm{e}^x}{(x+1)^2}+\mathrm{C}$, (where C is a constant of integration)

$\frac{x \mathrm{e}^x}{(x+1)^2}+C$, (where C is a constant of integration)

$\frac{\mathrm{e}^x}{(x+1)^2}+\mathrm{C}$, (where C is a constant of integration)