hi everyone. im having some trouble with this question... thank you! EDIT: I think I found the answer ... for part a) would it be 0 0 1 0 1 0 1 0 0 (so an identity matrix flipped horizontally?)
Last edited by finalfantasy; Feb 19th 2009 at 03:48 PM.
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Originally Posted by finalfantasy EDIT: I think I found the answer ... for part a) would it be 0 0 1 0 1 0 1 0 0 Not according to my CAS. Look again at the third power it is back to the original. But try
Thanks! would i use the property of determinants to solve part b? (this assignment is about determinants)
Originally Posted by finalfantasy this assignment is about determinants As such can you use to prove that ? If you can, then that answers your question.
hm .. what i ended up doing was stating that if B inverse exists, then det (B) cannot equal zero. i used the example from part one to illustrate that, and the det. was zero therefore there was no inverse. can that suffice as answer?
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