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Question
If A is a square matrix of order 3 and determinant of A=3 find (AA^T)
If A is a square matrix of order 3 and determinant of A=3 find (AA^T)
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Solution
The determinant of a transpose of a matrix is equal to the determinant of the matrix.
|A|=|A'|
So
(AA^T)=3×3=9
The determinant of a transpose of a matrix is equal to the determinant of the matrix.
|A|=|A'|
So
(AA^T)=3×3=9
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