What is the integral from 1 to x of e^{-x^2} ?

The integral from 1 to x of e^{-x^2} is 0.88622…\erf(x)-0.74682…

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integral from 1 to x of e^{-x^2}

\int_{1}^{x} e^{- x^{2}} d x

0.88622 \dots erf (x) - 0.74682 \dots

Solution steps

\int_{1}^{x} e^{- x^{2}} d x

Use the nonelementary integral:

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

= [\frac{π}{2} erf (x)]_{1}^{x}

Compute the boundaries:

0.88622 \dots erf (x) - 0.74682 \dots

= 0.88622 \dots erf (x) - 0.74682 \dots

What is the integral from 1 to x of e^{-x^2} ?
The integral from 1 to x of e^{-x^2} is 0.88622…\erf(x)-0.74682…