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

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

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integral of-2e^{-x}x

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

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

Solution steps

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

Take the constant out:

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

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

Apply Integration By Parts

: - e^{- x} x - \int - e^{- x} d x

= - 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

\int \frac{1}{x ^{2} + 1} d x

\int ((x - 2) x + 4) d x

x \to 0 lim (x \cdot (e^{\frac{1}{x}} - 1))

y = arctan (2 t)

\frac{\partial}{\partial x} (2 x^{2} y^{4})

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