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How to Square a Number in Python?

How to Square a Number in Python?

By Srishti Trivedi
18 mins read
Last updated: 24 Aug 2023
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Overview

In this article, we shall learn how to square numbers in Python. We can define the square of a number as the method where we multiply the number by itself. In the below article, we shall learn the various methods by which we learn how to square a number in Python including code examples, elaborate explanations, and the significance of how to square a number in Python.

How to Square a Number in Python?

While studying mathematics, we used to multiply numbers by themselves. This method of multiplying the number with itself is termed a square of the number. We do the multiplication only once that is, n x n which can also be evaluated by raising a number to the power of 2.

While working with Python, there are scenarios while doing data analysis, financial calculations, and also some computations which require multiplication of the same number with itself that is, the square of that number. Hence, learning how to square numbers in Python is important because of its wide usage.

In this article, we shall learn various ways of building programs to find out how to square a number in Python.

Note: As we know, nxn=n2nxn = n^2 both are the same. Also, all the outputs of the squares are always positive. This means that negative multiplied by negative also gives a positive. Like, (−n)x(−n)=n2(-n)x(-n) = n^2

Pre-requisites

Before we move ahead to learn and understand different ways how to square a number in Python. Let us revise the concepts listed below as pre-requisite before we jump into the code examples and their elaborative explanations.

  • multiplication operator in Python
  • print in Python.
  • pow() method in Python.
  • input in Python.
  • int in Python.
  • exponent opeartor in Python.

Different Ways to Square a Number in Python

Now as we proceed we shall learn how to square a number in Python via all the listed methods one by one:

  • Using Multiplication Operator
  • Using an Exponent Operator
  • Using the pow() Method

Using Multiplication Operator

Intro: This is one of the easiest methods to find out the square of a number in Python. Here, we simply multiply a number by itself to obtain the square of that number.

The multiplication operator is used to find the product of 2 values. It is usually denoted as '*'. For finding the square of a number we just have to make sure that the number we give alongside the '*' operator is the same.

Syntax: The syntax we use to find square a number in Python using the multiplication operator is given below:

Parameters: The integer is passed twice alongside the '*' mark as the parameters to find how to calculate the square of a number in Python using the multiplication operator. We multiply the same integer twice to find square a number in Python.

Return Value: The return value we obtain by using a Multiplication Operator to find the square of a number in Python is the square of the number.

Output:

Algorithm:

  • We have analyzed two cases: first to find how to square numbers in Python for positive integers as well as second for negative integers.
  • We start by asking the user to enter an integer for which it wants to find how to square numbers in Python.
  • Once we receive input, we print it.
  • Following this we calculate how to square numbers in Python by using the multiplication operator -'*'. here we multiply the number we received with the same number to calculate the square of the same.
  • The same process is repeated for the negative integer received whose square is also found to be positive.
  • Lastly, we print the integer received alone with its square using the print function in Python.

Code:

Output:

Explanation: As seen above, we receive a positive integer - '4' and a negative integer - '-6' for which we need to calculate square a number in Python. We use the multiplication operator -'*' where we multiply the number we received with the same number to calculate the square of the same. We repeated the same steps for the negative integers received whose square is found out to be positive too. Finally, we print the integer received along with its square using the print function in Python.

Using an Exponent Operator

Intro: When working with Python, we also have one exponent operator which can also be used to calculate how to find the square of the number in Python. As we know, the square of a number is calculated by either multiplying the number with itself or also referred to as the same number raised to the power of 2. Using this logic, we are making use of the exponent operator which shall return the squared of the number.

The exponent operator is defined as '**'. For example, 'x ** x' is denoted as 'x' raised to the power of 'x' as a result.

Syntax: The syntax we use to find square a number in Python using an exponent operator is given below:

Parameters: The are no parameters that we need to pass to find how to calculate the square of a number in Python using the exponent operator. We only specify the double asterisk stars with integer 2 to denote raised to the power of 2.

Return Value: The return value we obtain by using an exponent operator to find the square of a number in Python is the square of the number.

Output

Algorithm:

  • We have analyzed two cases: first to find how to square numbers in Python for positive integers as well as second for negative integers.
  • We start by asking the user to enter an integer for which it wants to find how to square numbers in Python. Once we receive input, we print it.
  • Following this we calculate how to square numbers in Python by using the exponent operator -'**'. Here we multiply the number we received with the same number to calculate the square of the same. When a number to the power of 2 is the logic of the exponent operator to find how to find the square of the number in Python.
  • The Same process is repeated for the negative integer received whose square is also found to be positive.
  • Lastly, we print the integer received along with its square using the print function in Python.

Code:

Output:

Explanation: As seen above, we receive a positive integer - '6' and a negative integer - '-4' for which we need to calculate the square a number in Python. We use the exponent operator -'**' where we raised the number to the power of 2 using the exponent operator which shall calculate the square of the same. We repeated the same steps for the negative integer received whose square is found out to be positive too. Finally, we print the integer received along with its square using the print function in Python.

Using the pow() Method

Intro: With this approach, we should be using the built-in pow() function to calculate the square of the number in Python. In the pow() method we calculate 'a ** b' which gives output as a float value. We might think is the same as the exponent operator method, but here we get the flexibility of changing the power to any number which we shall limit to 2 as we want to find square a number in Python.

Syntax: The syntax we use to find square a number in Python for the pow() method is given below:

Parameters: The two important parameters which we need to pass to find how to calculate the square of a number in Python are base and exponent. Here, the base is the number whose square we want to find and the exponent is the power which we shall limit to 2 as we want to calculate how to find the square of a number in Python.

Return Value: The return value we obtain by implementing the pow() method to find how to square number in Python is the square of the number in the float datatype.

Output:

Algorithm:

  • We have analyzed two cases: first to find how to square numbers in Python for positive integers as well as second for negative integers.
  • We start by asking the user to enter an integer for which it wants to find how to square numbers in Python. Once we receive input, we print it.
  • Following this we calculate how to square numbers in Python by using the pow() method - Square_of_number = pow(base, exponent). Here we defined the integer as the base and the exponent we mention as 2 as we want to calculate the square of the same.
  • The Same process is repeated for the negative integer received whose square is also found to be positive.
  • Lastly, we print the integer received along with its square using the print function in Python.

Code:

Output:

Explanation: As seen above, we receive a positive integer - '5' and a negative integer - '-7' for which we need to calculate as square a number in Python. We use the in-built pow() method which has the syntax as Sqaure_of_number = pow(base, exponent) where the base is the number whose square we want to find and exponents are defined as 2 as we want to find a square. We raised the number to the power of 2 to calculate the square of the same. We repeated the same steps for the negative integers received whose square is found out to be positive too. Finally, we print the integer received along with its square using the print function in Python.

Some of the cool projects in Python which can help you understand concepts of Python a lot deeper along with having fun programming in Python are given below:

Conclusion

  • Scenarios such as data analysis, financial calculations, and also some computations require multiplication of the same number with itself that is, the square of that number. Hence, learning how to square numbers in Python is important because of its wide usage.
  • As we know, nxn=n2nxn = n^2 both are the same. Also, all the outputs of the squares are always positive. This means that negative multiplied by negative also gives a positive. Like, (−n)x(−n)=n2(-n)x(-n) = n^2.
  • We learned to square a number in Python with code examples, and elaborative explanations for all the below-listed methods:
    • Using Multiplication Operator.
    • Using an Exponent Operator.
    • Using the pow() Method.