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Linear AlgebraHardVector Spaces & Bases

Vector Spaces & Bases · Hard problem

What is the dimension of the span of the vectors (1,2,4,2)(1, 2, 4, 2), (4,0,−3,1)(4, 0, -3, 1), (−9,0,1,0)(-9, 0, 1, 0), (−3,4,11,−4)(-3, 4, 11, -4) in R4\mathbb{R}^{4}?