What is the integral from 5 to infinity of e^{-x} ?

The integral from 5 to infinity of e^{-x} is 1/(e^5)

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integral from 5 to infinity of e^{-x}

\int_{5}^{\infty} e^{- x} d x

\frac{1}{e ^{5}}

Decimal Notation

0.00673 \dots

Solution steps

\int_{5}^{\infty} e^{- x} d x

Compute the indefinite integral:

\int e^{- x} d x = - e^{- x} + C

Compute the boundaries:

\int_{5}^{\infty} e^{- x} d x = 0 - (- \frac{1}{e ^{5}})

= 0 - (- \frac{1}{e ^{5}})

Simplify

= \frac{1}{e ^{5}}

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What is the integral from 5 to infinity of e^{-x} ?
The integral from 5 to infinity of e^{-x} is 1/(e^5)