How to invert a matrix or nArray in Python?

How to invert a matrix or nArray in Python?

How to invert a matrix or nArray in Python?

This recipe helps you invert a matrix or nArray in Python


Recipe Objective

Have you ever tried to generate an inverse of ant matrix or ndArray. It looks quiet difficult to do it manually but in python it is very easy.

This python source code does the following:
1. Creates custom numpy matrix
2. Uses "linalg" and inverse function to calulate inverse of a matrix

So this is the recipe on how we can Invert a Matrix or ndArray

Step 1 - Import the library

import numpy as np

We have only imported numpy which is needed.

Step 2 - Setting up the Data

We have created a matrix using array and we will find inverse of this. matrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])

Step 3 - Calculating inverse of matrix

We can find the inverse of the martix by using np.linalg.inv and passing the matrix. Inv = np.linalg.inv(matrix) print() print(Inv) So the output comes as

[[ 3.15251974e+15 -6.30503948e+15  3.15251974e+15]
 [-6.30503948e+15  1.26100790e+16 -6.30503948e+15]
 [ 3.15251974e+15 -6.30503948e+15  3.15251974e+15]]

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