Python Identity Matrix
import numpy as np Example 1 Create a 3x3 identity matrix
I = np.identity(3) print("3x3 Identity Matrix:") print(I) 
also can use np.eye
I2 = np.eye(3) print("3x3 Identity Matrix:") print(I2) 
Example 2 Matrix Multiplication
Define a random matrix A A = np.array([[2, 6], [3, 3]]) Identity matrix of appropriate size I = np.identity(2) # Multiplication with the identity matrix result = np.dot(A, I) print("Matrix A:") print(A) 
print("A multiplied by Identity Matrix:") print(result) 
Multiplication with the identity matrix result2 = np.dot(I, A) print("A multiplied by Identity Matrix:") print(result2) 
Example 3 Determinant of the Identity Matrix
det_I = np.linalg.det(I) print("Determinant of Identity Matrix:") print(det_I) 
Example 4 Identity Matrix is Its Own Inverse
inverse_I = np.linalg.inv(I) print("Inverse of Identity Matrix:") print(inverse_I) 
Example 5 Eigenvalues of the Identity Matrix
eigenvalues, _ = np.linalg.eig(I) print("Eigenvalues of Identity Matrix:") print(eigenvalues) 
