#### Exercise 552

For Given Matrix A:

- Give the python numpy code that compute the reverse B of matrix A
- To ensure the result, calculate B.dot (A)

#### Solution

### Question 1

`import numpy as np `

A = np.array([[3,2] ,

[2,3]])

B = np.linalg.inv (A)

print ("The reverse of A is :", B)

# The out put is : The reverse of A is : [[ 0.6 -0.4] [-0.4 0.6]]

### Question 2

import numpy as np

A = np.array([[3,2] ,

[2,3]])

B = np.linalg.inv(A)

BA = np.dot(A,B)

print(AB)

The output is : [[ 1.00000000e+00 0.00000000e+00] [-2.22044605e-16 1.00000000e+00]]