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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 (429 points) 15 30 | 247 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 Veteran (18k points) 7 20 76
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Else you can consider going for reduced row-echelon form.

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