Python – log1p() Function – Examples & Explanation

log1p() function is used to find the the natural logarithm of 1+x (base e) in Python for the given input(x – parameter).

 

Syntax of log1p() Function

The syntax of log1p() function in Python is:

math.log1p(x)

 

Parameters of log1p() Function in Python

x – Where x is any valid python number (positive or negative). This parameter is required.
Note: If the x parameter is not a number, log1p() function will return an Error.

 

Compatibility

log1p() function is available and compatible with both Python 2.x and 3.x. This function is a part of python standard math library.

 

Return Value of log1p() Function in Python

log1p() function returns the natural logarithm of 1+x (base e) for the given input.

 

Python log1p() Function Example

# import math library
import math
print(math.log1p(-0.2))
print(math.log1p(0))
print(math.log1p(0.2))
print(math.log1p(77))
print(math.log1p(-3677))

Output: