Let Mbe a 2xx2symmetric matrix with integer entries. Then Mis inve | Filo
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class 12

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Let be a symmetric matrix with integer entries. Then is invertible ifThe first column of is the transpose of the second row of The second row of is the transpose of the first column of is a diagonal matrix with non-zero entries in the main diagonalThe product of entries in the main diagonal of is not the square of an integer

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