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
import math
test_int = 4
test_neg_int = - 3
test_float = 0.00
print (math.exp(test_int))
print (math.exp(test_neg_int))
print (math.exp(test_float))
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Output:
54.598150033144236
0.049787068367863944
1.0
Code #2:
python3
import math
print (math.exp(math.pi))
print (math.exp(math.e))
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Output:
23.140692632779267
15.154262241479262
Code #3: TypeError
python3
import math
print (math.exp(" 25 "))
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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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