Python math library | exp() method

Python math library | exp() method

Last Updated : 07 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

Python math library | exp() method

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