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  • Brainly User
2014-12-26T16:30:46+05:30
If 'A' is a square matrix then the sum of the elements present in the principal diagonal is called trace of a matrix.it is possible only in square matrix

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2014-12-26T16:32:32+05:30
The trace of matrix A is the sum of the entries on the main diagonal of A 
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