Search: Is this set a subspace

If S is the subspace of R^3 containing only the zero vector, what is S perp ? If S is spanned by ( 1... Is this set a subspace of R3 or not? Explain why or why not. Span{[1 2 1],[-1 1 3]} I've trie... how is this not a subspace of R3? The set of all vectors of the form a b c , where a >... Let W be the subspace of R5 spanned by the vectors w1, w2, w3, w4, w5, where w1 = 2 −1 1 2... Let V be a subspace of (3. What are the possible dimensions for V? Show that if V ((3, then either... Let W be a subspace of V. If dim W = dim V, then V = W Proof: what is the basis of a subspace or R3 defined by the equation 2x1+3x2+x3=0 I know the basis is v...