Given a square matrix, a, determine whether it is orthogonal.
INPUT: a, a n x n matrix
OUTPUT: true or false
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Problem Comments
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2 Comments
Alfonso Nieto-Castanon
on 5 Mar 2012
perhaps you could these cases to avoid some non-general solutions... TEST1: x=sqrtm([2,1;1,1]); y_correct=false; TEST2: x=randn(3); y_correct=false;
Bruce Raine
on 7 Mar 2012
Thanks for the suggestions. I have implemented both of the tests. Cheers.
Solution Comments
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1 Comment
Andrew Dobrovolc
on 11 Sep 2017
I believe the test cases are wrong, I could not prove that a matrix from randn(3) is orthogonal.
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