Cody

# Problem 451. Is this matrix orthogonal?

Solution 1894895

Submitted on 8 Aug 2019 by Shinji Takahashi
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### Test Suite

Test Status Code Input and Output
1   Pass
x = orth(randn(3)); y_correct = true; assert(isequal(isOrthogonal(x),y_correct))

2   Pass
x = orth(randn(4)); y_correct = true; assert(isequal(isOrthogonal(x),y_correct))

3   Pass
x = orth(randn(5)); y_correct = true; assert(isequal(isOrthogonal(x),y_correct))

4   Pass
x=sqrt([3,1;1,1]); y_correct = false; assert(isequal(isOrthogonal(x),y_correct))

5   Pass
x = magic(6); y_correct = false; assert(isequal(isOrthogonal(x),y_correct))

[Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 8.001607e-19.] [> In isOrthogonal (line 2) In ScoringEngineTestPoint5 (line 3) In solutionTest (line 11)]

6   Pass
x = randn(2)+1; y_correct = false; assert(isequal(isOrthogonal(x),y_correct))