The Python expm1 function is one of the Python Math functions, which is to calculate the power of E (Where E is Euler’s number approximately equal to 2.71828) and subtracts One from it. In this section, we discuss how to use expm1 function in Python Programming language with example.
Syntax of a Python expm1 Function
The syntax of the expm1 Function in Python Programming Language is
Or we can simply say math.exp(number) – 1. Please refer Python exp function for further reference.
Number: It can be a number or a valid numerical expression.
- If the number argument is a positive or negative number, the expm1 function returns the output.
- If the number argument is not a number, expm1 function return TypeError.
Python expm1 Function Example
The Python expm1 Function calculates the power of Euler’s number E and subtracts One from it. In this example, we use expm1 to find the power of e of different data types.
# Python expm1 Function import math Tup = (1.98, 20.26, 13.05, -40.95 , 0.45) # Tuple Declaration Lis = [-10.98, 3.65, -9.59, -4.15 , 5.97] # List Declaration print('EXPM1() Function on Positive Number = %.2f' %math.expm1(1)) print('EXPM1() Function on Negative Number = %.2f' %math.expm1(-1)) print('EXPM1() Function on Tuple Item = %.2f' %math.expm1(Tup)) print('EXPM1() Function on List Item = %.4f' %math.expm1(Lis)) print('EXPM1() Function on Multiple Number = %.4f' %math.expm1(10 + 20 - 15.65)) print('EXPM1() Function on String Value = ', math.expm1('3'))
- First, We declared Python List and Tuple with some random values.
- Within the first two statements, We used the expm1 Function with both the Positive integer and negative integer values as arguments.
- Next two statements, We used the expm1 Function on Python Tuple and List items. If you observe the above screenshot, the expm1 function is working perfectly on them.
- Next, we tried the expm1 Function directly on multiple values.
- In the Last statement, We used the expm1 Function on the String value. As we said before, it returns TypeError as output.