Question

A inverse is defined only ifA is a​

Answer 1

Answer:

I think b is the answer , I don't know its right or not

Answer 2

Answer:

If A is a non singular matrix is the answer.

Singular ho jaayega toh determinant ka value 0 ho jaayega jo ki inverse nikaalne mein Adjoint ke saath divide kiya jaata hai, Adjoint ko 0 se divide karoge toh infinite aayega inverse ka value jo ki possible nahi hai.

A^-1 = 1/|A| × Adj.(A)

= 1/0 × Adj.(A)

= not possible