Please, do not use isequal with floats, prefer abs(a-b) < tol. I've found a solution, but it gives an error of order 1e-15. Rounding solutions to 10 or 14 decimal places is close enough. And looking at all other solutions so far, I am the first one to truly solve this problem (please, try my commented code).
Wow! That was hard to fix. The problem now tests against a tolerance of 1e–10. I also had to update a few of the anti-hacking checks to allow for a solution. Thanks to Rafael S.T. Vieira for providing a solution that could be used as a reference while fixing the test suite.
I also deleted the most recent hacking solutions.
Thanks again for fixing it, Grant. :)
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