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Python math.expm1() Method

❮ Math Methods

Example

Find the exponential value of a number - 1:

#Import math Library
import math

#Return the exponential ex-1
print(math.expm1(32))
print(math.expm1(-10.89))
Try it Yourself »

Definition and Usage

The math.expm1() method returns the value of Ex - 1, where E is Euler's number (approximately 2.718281...), and x is the number passed to it.

This function is more accurate than calling math.exp() and subtracting 1.

Syntax

math.expm1(x)

Parameter Values

Parameter Description
x Required. A number. If we try to find the exponential that is out the range of double it produces an error OverflowError

Technical Details

Return Value: A float value, representing the exponential - 1 of a number
Python Version: 2.7

❮ Math Methods