Linear Algebra - dimension of orthogonal complement

  • #1
I've attached a copy of the problem and my attempt at a solution.

This seems like a relatively straightforward question to me, but my answer seems to be the exact opposite of what the answer key says.

I reach the conclusion that the answer is C, but the answer is apparently D.

I'm beginning to think that the answer key is wrong. Can anybody verify my solution?
 

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Answers and Replies

  • #2
Dick
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I think your answer key is wrong.
 

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