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xCAS Integration strange behaviour when Digits != 14

Publié : dim. sept. 22, 2024 2:32 pm
par mcebrian
Hi,

New xCAS user here. I have observed with different difficult numerical integrations, I cannot get the decimal (final) result if Digits != 14.

It is able to approximate all if Digits is set to 14. It gives a real value.

This behavior is the same in all the platforms. (Mac native, web, Numworks).


Is this the expected behavior?
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If Digits=14 it is always able to give an approx value.

Why so?

Kind regards

Re: xCAS Integration strange behaviour when Digits != 14

Publié : dim. sept. 22, 2024 6:11 pm
par parisse
That's because there is no implementation for the incomplete gamma function in multiprecision.

Re: xCAS Integration strange behaviour when Digits != 14

Publié : dim. sept. 22, 2024 7:21 pm
par mcebrian
Thanks Mr. Bernard. That makes sense. Although most of the platforms that allow multi precision have it so I wanted to understand why.

Kind regards