Question: Is b in fa 1 ; a 2 ; a 3 g ? How many vectors are in fa 1 ; a 2 ; a

Is b in fa1; a2; a3g? How many vectors are in fa1; a2; a3g?
b. IsbinW?HowmanyvectorsareinW?
c. Show that a1 is in W .[Hint: Row operations are unnecessary.

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