Find the sum of the coefficients when we write the vector (-1,2,0) as the linearcombination of t

問題詳情

78. Find the sum of the coefficients when we write the vector (-1,2,0) as the linearcombination of three vectors (2,1,5), (-1,1,3) and (3,1,9).
(A) 2
(B) 3
(C) 5
(D) 7

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