Python math library | exp() method (original) (raw)

Last Updated : 7 Feb, 2023

Python has math library and has many functions regarding it. One such function is exp(). This method is used to calculate the power of e i.e. e^y or we can say exponential of y. The value of e is approximately equal to 2.71828…..

Syntax : math.exp(y)
Parameters : y [Required] - It is any valid python number either positive or negative. Note that if y has value other than number then its return error.
Returns: Returns floating point number by calculating e^y.

Time Complexity: O(1)
Auxiliary Space: O(1)

Code # 1:

python3 `

Python3 code to demonstrate

the working of exp()

import math

initializing the value

test_int = 4 test_neg_int = -3 test_float = 0.00

checking exp() values

with different numbers

print (math.exp(test_int)) print (math.exp(test_neg_int)) print (math.exp(test_float))

`

Output:

54.598150033144236 0.049787068367863944 1.0

Code #2:

python3 `

Python3 code to demonstrate

the working of exp()

import math

checking exp() values

with inbuilt numbers

print (math.exp(math.pi)) print (math.exp(math.e))

`

Output:

23.140692632779267 15.154262241479262

Code #3: TypeError

python3 `

Python3 code to demonstrate

the working of exp()

import math

checking for string

print (math.exp("25"))

`

Output:

Traceback (most recent call last): File "/home/c7ae4f1bef0ed8c7756b3f55e7d2ce81.py", line 6, in print (math.exp("25")) TypeError: a float is required