Python Coding challenge - Day 410| What is the output of the following Python Code?

 

Code Explanation:

1. Importing Required Libraries

from scipy.linalg import det

import numpy as np

from scipy.linalg import det → This imports the det() function from the scipy.linalg module. The det() function is used to calculate the determinant of a matrix.

import numpy as np → This imports the numpy library and gives it the alias np. NumPy is a powerful library for numerical operations and matrix manipulations.

2. Creating the Matrix

matrix = np.array([[4, 2], [3, 1]])

np.array() → This function is used to create a NumPy array. In this case, it creates a 2x2 matrix using the nested lists [[4, 2], [3, 1]].

The matrix looks like this:

3. Calculating the Determinant

print(det(matrix))

det(matrix) → This calls the det() function to calculate the determinant of the matrix.

Determinant Formula for a 2x2 Matrix:

det(A)=ad−bc

Where the matrix is:

det(A)=(4⋅1)−(2⋅3)=4−6=−2

print() → Displays the result of the determinant on the console.

Final Output

-2.0