Question

Let A be an 4 x 3 matrix. Then for the set {x ∈ R3: Ax = 0), which one of the following is true?


Let A be an 4 x 3 matrix. Then for the set {x ∈ R3: Ax = 0), which one of the following is true?

 a) Subspace of R3

 b) Subspace of R4 

 c) Both subspace of R3 and subspace of R4

 d) Neither subspace of R3 nor subspace of R4

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