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Question
Classify each of the following matrices as a row, a column, a square, a diagonal, a scalar, a unit, an upper traingular, a lower triangular matrix.
`[(3, 0, 0),(0, 5, 0),(0, 0, 1/3)]`
Solution
Let A = `[(3, 0, 0),(0, 5, 0),(0, 0, 1/3)]`
As matrix A has all its non-diagonal elements zero.
∴ A is a diagonal martix.
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