Practicing Success
Practicing Success
CUET Preparation Today
If $A=\begin{bmatrix}1 & 3 & x^2\\0& 1& 0\\0 & 0 & 1\end{bmatrix}, B=\begin{bmatrix}1 & -3 & y^2\\0& 1& 0\\0 & 0 & 1\end{bmatrix}$ and $AB=I_y,$ where $I_3$ is the identity matrix of order $3×3$, then $x^2+y^2$ equals : |
1 0 3 2 |
0 |
