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Vectors & Spaceshard
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Find the dimension of the subspace of R3\mathbb{R}^3R3 spanned by {(1,2,3),(2,4,6),(3,6,9)}\{(1, 2, 3), (2, 4, 6), (3, 6, 9)\}{(1,2,3),(2,4,6),(3,6,9)}.