Question: 2. [6 marks] Let A be an n x n matrix. Show, using the Subspace Test, that null(A) is a subspace of R. Hint: Recall

2. [6 marks] Let A be an n x n matrix. Show, using the Subspace Test, that null(A) is a subspace of R". Hint: Recall that null(A) = T E R3 : AT = 0 . Use this definition to show that the three criteria of the Subspace Test are satisfied

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