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The rank of above matrix is 3 then what is that square sub matrix of order 3 whose determinant is not equal to 0.

asked in Linear Algebra by (331 points) | 827 views

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You can have any rows and columns for considering the rank.

Here, you consider R1, R3, R4 for rank. Hence, rank=3
answered by Boss (18.4k points)
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Else you can consider going for reduced row-echelon form.

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