Practicing Success
Practicing Success
CUET Preparation Today
If A is non-identity invertible symmetric matrix, then $A^{-1}$ is : |
Symmetric matrix Skew-symmetric matrix Identity matrix Zero matrix |
Symmetric matrix |
The correct answer is Option (1) → Symmetric matrix A is invertible $⇒ AA^T=I$ so $A^{-1}=A^T$ A is symmetric $⇒A^{-1}$ is symmetric |
