Mathematics 4024 · O Level · Algebraic manipulation

Algebraic manipulation — practice question

Let $M=\begin{pmatrix}1&0\\4&3\end{pmatrix}$ and $N=\begin{pmatrix}k&0\\1&4\end{pmatrix}$. If $MN=NM$, determine the value of $k$.
(main)[3]

Determine the value of $k$.

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