Python Coding challenge - Day 396| What is the output of the following Python Code?

 

Code Explanation:

1. Importing NumPy

import numpy as np

NumPy is a powerful library in Python for working with arrays and mathematical operations. Here, we use it to perform matrix operations.

2. Defining the Matrix

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

We create a 2×2 matrix:

This matrix has two rows and two columns.

3. Computing the Determinant

det_A = np.linalg.det(A)

The determinant of a 2×2 matrix is given by the formula:

det(𝐴)=(𝑎×𝑑)−(𝑏×𝑐)

For our matrix:

det(A)=(2×3)−(4×1)

=6−4=2

NumPy calculates this using np.linalg.det(A), which gives 2.0 as the result.

4. Rounding the Determinant

print(round(det_A))

Since det_A = 2.0, rounding it doesn’t change the value. So the final output is:

Final Output:

2