import numpy as np
def inverse_2_2(A):
    a = A[0][0]
    b = A[0][1]
    c = A[1][0]
    d = A[1][1]
    det = a*d - b*c
    if det == 0:
        return (False)
    else:
        return(1/det*np.array([[d,-b],[-c,a]]))
     
A = np.array([[0,0], [0,9]])
print(inverse_2_2(A))