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A square matrix $\left[\mathrm{a}_{\mathrm{ij}}\right]$ such that $\mathrm{a}_{\mathrm{ij}}=0$ for $\mathrm{i} \neq \mathrm{j}$ and $\mathrm{a}_{\mathrm{ij}}=\mathrm{k}$ where
$\mathrm{k}$ is a constant for $1=\mathrm{j}$ is called:
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$\mathrm{k}$ is a constant for $1=\mathrm{j}$ is called:
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The correct answer is:
scalar matrix
Scalar Matrix. We know that, $\mathrm{A}=\left[\mathrm{a}_{\mathrm{ij}}\right]_{\mathrm{nxn}}$ is called a scalar matrix ifa $_{\mathrm{i}}$ $=0$ for $i \neq j$ and $a_{i j}=k$ for $i=j$ [where $k$ is constant $]$
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