# What is erf?

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In mathematics, the error function, often denoted by erf, is a complex function of a complex variable defined as:,This integral is a special and sigmoid function that occurs often in probability, statistics, and partial differential equations. is the "error function" encountered in integrating the normal distribution (which is a normalized form of the Gaussian function). erf(z) is the "error function" encountered in integrating the normal distribution (which is a normalized form of the Gaussian function). In mathematics, the error function (also called the Gauss error function), often denoted by erf, is a complex function of a complex variable defined as: This integral is a special (non-elementary) and sigmoid function that occurs often in probability, statistics, and partial differential equations. In this video, I show you the graph of the Error Function, namely y=erf(x). The error function equals twice the integral of a normalized Gaussian function between.

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