# Inverse error function

## Calculates the inverse error function erf -1(y) and inverse complementary error function erfc -1(y).

 y 0≦y≦1
 6dgt10dgt14dgt18dgt22dgt26dgt30dgt34dgt38dgt42dgt46dgt50dgt
 $\normal Error\ function\ erf(x)\ and\\\ complementary\ error\ function\ erfc(x)\\[10](1)\ erf(x)={\large\frac{2}{\sqrt\pi}}{\large\int_{\small 0}^ {\hspace{25}\small x}}e^{-t^2}dt\\\hspace{25}erfc(x)={\large\frac{2}{\sqrt\pi}}{\large\int_{\small x}^ {\hspace{25}\small\infty}}e^{-t^2}dt\\[10](2)\ erf(x)+erfc(x)=1\\$

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