6 -1 -2 -3 0 2 0 1-2 nations of the columns of A. . W is the • Is b € W? . In one line (with minimal computation), show that the first column of A is in W. Let A and b = 3. Let W be the set of all linear combi- of the columns of A. (One word answer.)

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Q: -2 2 1 -3 6. -1 1 -7 10

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