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Let W be a subspace of R^4 spanned by v1 = [1,1,2,0] and v2 = 2,-1,0,4]....

Let W be a subspace of R^4 spanned by v1 = [1,1,2,0] and v2 = 2,-1,0,4]. Find a basis for W^T = {v is in R^2 : w*v = 0 for w inside of W}

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