Question: Is it possible that there is onlyone solutioninthe reduced echelon form of a linear equation system with 3 linear equations and 5 unknown variables. How

Is it possible that there is onlyone solutioninthe reduced echelon form of a linear equation system with 3 linear equations and 5

unknown variables. How about 4 pivots, 5 pivots and 6 pivots?

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