If we take an nxn diagonal matrix, and multiply it by an nxn matrix C such that AC=CA, will C be diagonal? I know, for instance, if C is a matrix with ones in every entry, AC=CA holds. But is there a more general way to format such a counterexample, or have I already provided a sufficient "proof"?(adsbygoogle = window.adsbygoogle || []).push({});

Thanks in advance. This isn't a homework question.

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# Product of Diagonal Matrices

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