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HP Forums / HP Calculators (and very old HP Computers) / HP Prime v / Gamma Function diffrent results from Prime / Wolfram

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Gamma Function diffrent results from Prime / Wolfram
03-12-2018, 02:45 PM
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c0manche Offline
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Gamma Function diffrent results from Prime / Wolfram
I have found that Gamma(1/3,-216) gives different answers between Prime / Other Cas systems.

Prime / Xcas gives aprox 1.78918142756e+92

Mathematica / Wolf Alpha gives aprox 8.94591*10^91 - 1.54948*10^92 I
Maxima gives a similar result to mathematica / alpha

https://www.wolframalpha.com/input/?i=Ga...3,+-216%5D

I have noticed that Prime is giving the Magnitude of the Complex answer were as the other cas systems are giving the Complex result. why is this?

This has been puzzling me for the last few days any help will be appreciated
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Gamma Function diffrent results from Prime / Wolfram - c0manche - 03-12-2018 02:45 PM



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