2 -15 16 Is b is a linear combination of a₁, a2 and a3, the columns of the matrix A? O No O Yes. Let A = 1 a1+ 246 2 -4 -5 -3 and b = -2₂ +0 0 If b is a linear combination of the columns of A, determine a non-trivial linear relation between a1, a2, a3 and b. Otherwise, enter O's for the coefficients. a2+ -a a3 = b.

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