Question: For the matrix D below use the extended echelon form to find: 1. A linearly independent set whose span is the column space of D.

For the matrix D below use the extended echelon form to find:
1. A linearly independent set whose span is the column space of D.
2. A linearly independent set whose span is the left null space of D.

-7-11-19-15] 6 10 18 14 1 3

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