The trace of a square matrix is defined to be the sum of its diagonal entries....
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The trace of a square matrix is defined to be the sum of its diagonal entries. If A is a 2 x 2 matrix such that the trace of A is 3 and the trace of A' is- 18, then the value of the determinant of A is The trace of a square matrix is defined to be the sum of its diagonal entries. If A is a 2 x 2 matrix such that the trace of A is 3 and the trace of A' is- 18, then the value of the determinant of A is
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