Question: a. Is b in (a, a2, a3}? How many vectors are in (a, a2. a3}? b. Is b in W? How many vectors are

a. Is b in (a, a2, a3}? How many vectors are in

(a, a2. a3}? b. Is b in W? How many vectors are

a. Is b in (a, a2, a3}? How many vectors are in (a, a2. a3}? b. Is b in W? How many vectors are in W? c. Show that a, is in W. [Hint: Row operations are unnecessary.] Let A = 10-2 04-6 -58 3 and b = 1 -4 - 23 Denote the columns of A by a, a2, a3, and let W = Span 1, 2, 3).

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