Difference between revisions of "Inverse error function"

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(Properties)
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[[Derivative of inverse error function]]
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[[Derivative of inverse error function]]<br />
[[Antiderivative of inverse error function]]
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[[Antiderivative of inverse error function]]<br />
  
 
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Revision as of 04:42, 16 September 2016

The inverse error function is the inverse function of the error function. We denote it by writing $\mathrm{erf}^{-1}$.

Properties

Derivative of inverse error function
Antiderivative of inverse error function

Theorem: The following formula holds: $$\displaystyle\int_0^1 \mathrm{erf}^{-1}(x) dx=\dfrac{1}{\sqrt{\pi}}.$$

Proof:

Theorem: The following formula holds: $$\displaystyle\int_0^1 \log(\mathrm{erf}^{-1}(x)) dx = \left( \dfrac{\gamma}{2} + \log(2) \right),$$ where $\mathrm{erf}^{-1}$ denotes the inverse error function, $\log$ denotes the logarithm, and $\gamma$ denotes the Euler-Mascheroni constant.

Proof:

<center>Error functions
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