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Matrices — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHSMatrices1 Mark
Question
If $A=\left[\begin{array}{ll}1 & 3 \\ 2 & 4\end{array}\right], B=\left[\begin{array}{ll}-1 & -3 \\ -2 & -4\end{array}\right]$ then find the value of $B A$.
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Answer

Value of $B A$ : $\left[\begin{array}{cc}-7 & -15 \\ -10 & -22\end{array}\right]$

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