What is the integral from 1 to infinity of xe^{-10x} ?

The integral from 1 to infinity of xe^{-10x} is (11)/(100e^{10)}

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integral from 1 to infinity of xe^{-10x}

\int_{1}^{\infty} x e^{- 10 x} d x

\frac{11}{100 e ^{10}}

Solution steps

\int_{1}^{\infty} x e^{- 10 x} d x

Compute the indefinite integral:

\int x e^{- 10 x} d x = \frac{1}{100} (- 10 e^{- 10 x} x - e^{- 10 x}) + C

Compute the boundaries:

\int_{1}^{\infty} x e^{- 10 x} d x = 0 - (- \frac{11}{100 e ^{10}})

= 0 - (- \frac{11}{100 e ^{10}})

Simplify

= \frac{11}{100 e ^{10}}

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What is the integral from 1 to infinity of xe^{-10x} ?
The integral from 1 to infinity of xe^{-10x} is (11)/(100e^{10)}