What is the integral of (2x)/(e^{-x)} ?

The integral of (2x)/(e^{-x)} is 2(e^xx-e^x)+C

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integral of (2x)/(e^{-x)}

\int \frac{2 x}{e ^{- x}} d x

2 (e^{x} x - e^{x}) + C

Solution steps

\int \frac{2 x}{e ^{- x}} d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 2 \cdot \int \frac{x}{e ^{- x}} d x

Apply Integration By Parts

= 2 (e^{x} x - \int e^{x} d x)

\int e^{x} d x = e^{x}

= 2 (e^{x} x - e^{x})

Add a constant to the solution

= 2 (e^{x} x - e^{x}) + C

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What is the integral of (2x)/(e^{-x)} ?
The integral of (2x)/(e^{-x)} is 2(e^xx-e^x)+C