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Question
Classify the following matrix as, a row, a column, a square, a diagonal, a scalar, a unit, an upper triangular, a lower triangular, a symmetric or a skew-symmetric matrix:
`[(3, -2, 4),(0, 0, -5),(0, 0, 0)]`
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Solution
Let A = `[(3, -2, 4),(0, 0, -5),(0, 0, 0)]`
Since all the elements below the diagonal are zero in matrix A., it is an upper triangular matrix.
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