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24 February, 09:37

Which of the following is a diagonal matrix?

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  1. 24 February, 10:29
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    A square matrix having all its elements except in the leading (principal) diagonal are zero is called a diagonal matrix.
  2. 24 February, 10:53
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    A square matrix is diagonal if and only if it is triangular and normal. Any square diagonal matrix is also a symmetric matrix. A symmetric diagonal matrix can be defined as a matrix that is both upper - and lower-triangular. The identity matrix In and any square zero matrix are diagonal.
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