Erf math meaning

Why is the error function defined as it is?

Definition and Usage The math.erf () method returns the error function of a number. This method accepts a value between - inf and + inf, and returns a value between - 1 to + 1. Syntax math.erf (

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Error function

The imaginary error function erfi(z) is an entire function defined by erfi(z)=-ierf(iz), (1) where erf(z) is the erf function. It is implemented in the Wolfram Language as Erfi[z]. erfiz has derivative

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x^{2}}\operatorname {erfcx} x,\end{aligned}}}

Definition. The error function erf (X) is twice the integral of the Gaussian distribution with 0 mean and variance of . The complementary error function erfc (X) is defined as. The scaled

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Error function

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x^{2}}\operatorname {erfcx} x,\end{aligned}}}

Error Function Calculator

Error Function: Simple Definition, Table of Values

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