Calculator and formula for the inverse error function erfi(x)
This function calculates the inverse error function erfi(x).
To perform the calculation, enter the argument x. Then click the 'Calculate' button.
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\(\displaystyle erf(x)= \frac{2}{\sqrt{π}} \int_0^x e^{-t^2}dt \)
\(\displaystyle erfc(x)= \frac{2}{\sqrt{π}} \int_x^∞ e^{-t^2}dt \)
\(\displaystyle erf(x)+erfc(x)=1 \)
\(\displaystyle erfi(x) = erf^{-1}(x) \)
\(\displaystyle erf^{-1}(erf(x)) = x \)
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