Trong không gian vector R cho hai hệ vector u-u, -(m-2,2,5);:u,-(2,1,3);u, - (3,1,3)}, V={v₁ = (m-1,2,1); v = (m. 2,1);, =(-1,7.4)). a. Chúng tỏ UI, V là hai cơ sở của R. b. Cho t = (101,2,3), tim tọa độ của x theo cơ sở V.

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