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Python math.erf() Method

❮ Math Methods

Example

Calculate the mathematical error function of different numbers:

# Import math Library
import math

# Print the error function of different numbers
print (math.erf(0.67))
print (math.erf(1.34))
print (math.erf(-6))
Try it Yourself »

Definition and Usage

The math.erf() method returns the error function of a number.

Error functions usually occur in probability, statistics and partial differential equation describing diffusion.

The math.erf() method accepts a value range between [-x, x], and returns the error function in between [-1,1].

Note: erf(-x)==-erf(x), error function of a negative number is negative.

Syntax

math.erf(x)

Parameter Values

Parameter Description
x Required. The number to find the error function of

Technical Details

Return Value: A float value, representing the error function of a number
Python Version: 3.2

More Examples

Example

Calculate the mathematical error function of the same number, positive and negative:

print (math.erf(1.28))
print (math.erf(-1.28))
Try it Yourself »

❮ Math Methods