Python math.expm1() Method
Python math ModulePython math.expm1(x)The method returns e raised to the power of x minus 1,Ex - 1, where e = 2.718281... is the base of the natural logarithm.
math.expm1(x)The method is more precise than callingmath.exp()subtracting 1.
Python Version: 2.7
Syntax
The syntax of the math.expm1() method is as follows:
math.expm1(x)
Parameter Description:
- xx -- Required, a number, specifies the exponent. If x is not a number, returns TypeError.
Return Value
A floating-point value, representing Ex - 1。
Example
The following example specifies different exponents:
Example
# Import the math package
import math
# Specify different exponents
print(math.expm1(32))
print(math.expm1(-10.89))
import math
# Specify different exponents
print(math.expm1(32))
print(math.expm1(-10.89))
Output result:
78962960182679.69 -0.9999813562576685Other Extensions