JEE Class main Answered
solve
Asked by bhatimahipalsingh21 | 11 Mar, 2024, 08:49: PM
Expert Answer
Given matrix A is
Let us do the following elemntary operations
R4-R3 gives
R3-R2 gives
R2-R1 gives
R4- (5 ×R3) gives
C4-C3 gives
C3-C2 gives
C2-C1 gives
Similarly the subsequent operations C4-C3 , C3-C2 ans R3-R2 gives
Finally, we get non reduceable minor of order 2
Hence rank of matrix A is 2
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