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Complex InverseCotangent is probably wrong #2

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furun opened this issue Mar 24, 2015 · 2 comments
Open

Complex InverseCotangent is probably wrong #2

furun opened this issue Mar 24, 2015 · 2 comments

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@furun
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furun commented Mar 24, 2015

i tested the complex.cs trigonometric functions on a mandelbrot set (z^2 + TRIG(c)), and InverseCotangent seams to be incorrect.

mathnet-numerics/Numerics/Trigonometry.cs, Complex Acot, seams to be correct
@cdrnet
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cdrnet commented Mar 25, 2015

Thanks for reporting this - would you be ready to provide a test and fix (pull request)?

@furun
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furun commented Mar 25, 2015

i am not a mathematician and would not break it more, but i can tray to fix it.
please check the fix!

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@cdrnet @furun