Cody

Problem 451. Is this matrix orthogonal?

Solution 3399188

Submitted on 26 Oct 2020
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   Fail
x = orth(randn(3)); y_correct = true; assert(isequal(isOrthogonal(x),y_correct))

ans = 3×3 logical array 0 0 0 0 0 0 0 0 0

Assertion failed.

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

ans = 4×4 logical array 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0

Assertion failed.

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

ans = 5×5 logical array 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Assertion failed.

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

ans = 2×2 logical array 0 0 0 0

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

ans = 6×6 logical array 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

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

ans = 2×2 logical array 0 0 0 0