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by papln
2423 days ago
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Despite convention, it is reasonable to consider sqrt(3) to have ambiguous sign since inverse(square) is a multi-valued function (as is arctan). So you can have arctan(-sqrt(3)) = arctan(sqrt(3)) = pi/3 (allowing for arbitrary selection from multi-valued functions) This is a problem in general with the design of calculators and single-result algorithms in general. The -1 might be needed to trigger the bug. The Citizen calculator has a reputation for bad math: https://forum.kerbalspaceprogram.com/index.php?/topic/119681... |
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