Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: Rank of a Matrix
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r P (87)

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First calculate the minor of the highest possible order of a given matrix. If it is 0, then the order of the minor is the rank.

If it is = 0, and all other minors of the same order is 0, then minors of the next lower order should be calculated.

If at least 1 minor of given order  not equal to 0  that order is the rank.

to sum up, rank of a given matrix A is said to be 'r' if:
1. Every minor of  A of order r+1 is zero
2. There is at least one minor of A of order r which is not equal to 0.

hope u understand this...

Impossible is Nothing
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