Inverse error function erfi(x)

Calculator and formula for the inverse error function erfi(x)

Calculate the inverse error function


This function calculates the inverse error function erfi(x).

To perform the calculation, enter the argument x. Then click the 'Calculate' button.


erfi(x) calculator

 Input
Argument x
Decimal places
 Result
Erfi Function

Formula for the function erfi (x)

\(\displaystyle erf(x)= \frac{2}{\sqrt{π}} \int_0^x e^{-t^2}dt \)
\(\displaystyle erfc(x)= \frac{2}{\sqrt{π}} \int_x^∞ e^{-t^2}dt \)
\(\displaystyle erf(x)+erfc(x)=1 \)
\(\displaystyle erfi(x) = erf^{-1}(x) \)
\(\displaystyle erf^{-1}(erf(x)) = x \)
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