jee-main 2020 Q59

jee-main · India · session1_08jan_shift2 Matrices Linear System and Inverse Existence

If $A = \begin{pmatrix} 2 & 2 \\ 9 & 4 \end{pmatrix}$ and $I = \begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}$, then $10A^{-1}$ is equal to.
(1) $A - 4I$
(2) $6I - A$
(3) $A - 6I$
(4) $4I - A$

If $A = \begin{pmatrix} 2 & 2 \\ 9 & 4 \end{pmatrix}$ and $I = \begin{pmatrix} 1 & 0 \\ 0 & 1 \end{pmatrix}$, then $10A^{-1}$ is equal to.\\
(1) $A - 4I$\\
(2) $6I - A$\\
(3) $A - 6I$\\
(4) $4I - A$

Paper Questions

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