Cody

# Problem 451. Is this matrix orthogonal?

Solution 2151332

Submitted on 5 Mar 2020
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### Test Suite

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

Assertion failed.

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

Assertion failed.

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

Assertion failed.

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

Assertion failed.

5   Fail
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 4) In ScoringEngineTestPoint5 (line 3) In solutionTest (line 11)]

Assertion failed.

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

Assertion failed.