Question: If rows 1 and 2 are the same, how far can you get with elimination (allowing row exchange)? If columns 1 and 2 are

If rows 1 and 2 are the same, how far can you get with elimination (allowing row exchange)? If columns 1 and 2 are the same, which pivot is missing? Equal rows: Equal columns: 2x = y + z = 0 2x = y + z = 0 4x + y + z = 0 2x + 2y + z = 0 4x + 4y + z = 0 6x + 6y + z = 2

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