Given a square matrix, a, determine whether it is orthogonal.
INPUT: a, a n x n matrix
OUTPUT: true or false
Solution Stats
Problem Comments
-
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
-
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.
Problem Recent Solvers179
Suggested Problems
-
Project Euler: Problem 2, Sum of even Fibonacci
463 Solvers
-
Find the sum of the elements in the "second" diagonal
880 Solvers
-
Basics: 'Find the eigenvalues of given matrix
257 Solvers
-
204 Solvers
-
convert matrix to single column
217 Solvers
More from this Author16
Problem Tags
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)