e in Python Examples

Let’s look at e in Python with Examples! 🔥🔥🔥

Euler’s number, denoted as e, is a fundamental mathematical constant approximately equal to 2.71828. It’s the base of the natural logarithm and is particularly significant in calculus, complex analysis, and number theory due to its unique properties.

In Python, Euler’s number can be accessed using the math module, specifically math.e. The below code will simply print the value of e.

import math

print(math.e)

#Prints
#2.718281828459045

You can then use e as part of different mathematical operations, like multiplication etc. :

import math

result = math.e * 3

print(result)

#Prints
#8.154845485377136

e can be used as a base and raised to some power x with the math.exp() function, which is really the same as e^x .The function accepts a real number to which power e is raised, as a parameter:

import math

principal = 1000
rate = 0.05
time = 3

compound_interest = principal * math.exp(rate * time)
print(compound_interest)  

#Prints:
#1161.834242728283

In this example we calculate compound interest. This is a known formula that uses e. We used the math.exp(rate * time) function as part of the expression that does the calculation which we can also write as e^{rate x time}.

We can also use e in calculations that require the natural logarithm. This is a mathematical function that represents the logarithm to the base e and is written as ln(x) or as log_e of x. This simply means that you are finding the power to which e must be raised to equal x. In python you use the code math.log() to accomplish this. See the code below:

import math

x = 5.0

# Calculate the natural logarithm of x
ln_x = math.log(x)

print(ln_x)  

#Prints: 
#1.6094379124341003

Basically anything that you would do with any other number or constant you can do with e in Python. Check out our other great tutorials HERE.

Thanks for reading e in Python Examples! Happy coding! 👌🏻👌🏻👌🏻