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# Determinant Question Watch

1. If a 23x23 matrix is such that A^T = -A , Find det(A)

Choices are -1, 1, -23, 0, 2

Bit confused here? I thought det(A^T) = det(A) anyway, so how does the info help me?
2. For an matrix .
3. (Original post by Lord of the Flies)
For an matrix .
I considered that, which would make my final answer -1*det(a) but that leaves the question of what is det(a) here? how does the info provided point to that value?
4. (Original post by Zilch)
I considered that, which would make my final answer -1*det(a) but that leaves the question of what is det(a) here? how does the info provided point to that value?
Well, coupled with we have

What is the only number that can satisfy this?
5. (Original post by Lord of the Flies)
Well, coupled with we have

What is the only number that can satisfy this?
Thanks. Got it!

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Updated: April 18, 2013
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