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Matrices — Mathematics STD 10 — Question

ICSE BoardEnglish MediumSTD 10MathematicsMatrices4 Marks
Question
Given $\left[\begin{array}{cc}4 & 2 \\ -1 & 1\end{array}\right] M =6 I$, where $M$ is a matrix and $I$ is unit matrix of order $2 \times 2$.
(a) State the order of matrix M.
(b) Find the matrix M.
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Answer

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