# Products of Diagonal Matrices

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The n × n matrix A = [aij] is called a diagonal matrix if aij = 0 when i != j. Show that the product of two n × n diagonal matrices is again a diagonal matrix. Give a simple rule for determining this product.

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It shows that the prodcut of two n x n diagonal matrices is again a diagonal matrix. The solution is detailed.

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The n × n matrix A = [aij] is ...

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