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
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