SOLUTION: Please help me to find rank of matrix 1 2 3 4 2 4 6 8 -1 -2 -2 -4

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Question 879789: Please help me to find rank of matrix
1 2 3 4
2 4 6 8
-1 -2 -2 -4
Answer by richwmiller(17219) About Me  (Show Source):