Practicing Success
Practicing Success
CUET Preparation Today
If A and B are two square matrices such that $AB=I$, then which of the following is not true? |
$BA=I$ $A^{-1}=B$ $B^{-1} = A$ $A^2=B$ |
$A^2=B$ |
We have, $AB=I$ $⇒B^{-1} = A$ and $A^{-1}=B$ $⇒BA=BB^{-1} =I$ Hence, option (4) is not correct. |
