Question: 2x 1 + 4x 2 5x 3 + 3x 4 = 0 3x 1 + 6x 2 7x 3 + 4x 4 = 0 5x

2x1 + 4x2 5x3+ 3x4 = 0

3x1 + 6x2 7x3+ 4x4 = 0

5x1 + 10x2 11x3 + 6x4 = 0

Which of the following are the free variables of the system in its echelon form?

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