Question: 4. Let aj = (1, 1, 1), a = (0, 1, 1), az = (1, 3, 2), and a (0, 0, 1). A2 =

4. Let aj = (1, 1, 1)", a = (0, 1, 1)",

4. Let aj = (1, 1, 1)", a = (0, 1, 1)", az = (1, 3, 2)", and a (0, 0, 1)". A2 = 1. Is 0 = (0, 0, 1) a linear combination of ai, a2, a3, a4? . :(1, 0, 2)' a linear combination of ai, a2, a3, a4? 2. Is 6 =

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