Symbolic result for sum(#)

#1 Posted: 7/5/2020 7:17:35 PM

Alvaro Diaz Falconi

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Hi. sum have an issue for symbolics evaluations.

Best regards.
Alvaro.

#2 Posted: 7/5/2020 7:36:36 PM

Jean Giraud

983 likes in 6866 posts.

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Just check , Alvaro.
Between yourself and me ... we are old kookoo in those games !

#3 Posted: 7/5/2020 8:51:36 PM

overlord

547 likes in 1330 posts.

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Wrote
Hi. sum have an issue for symbolics evaluations.

Best regards.
Alvaro.

You are correct, bug reproduced.
Definitely there are some issues.
Perhaps it is not only sum related too.

1 users liked this post

Alvaro Diaz Falconi 7/6/2020 3:46:00 AM

#4 Posted: 7/6/2020 3:45:56 AM

Alvaro Diaz Falconi

992 likes in 1674 posts.

Group: User

Hi. Thanks Overlord. I don't see these other problem. What make troubles for me is the fact that sum don't returns the symbolic values but numerical approximations, in this case for sqrt(17). I expect to see sum(vec) = 5/sqrt(17) instead the rational showed. I introduce the "x" value just for check if sum have some eval() function somewhere. But then ... ups, another issue simplifying 1+4.

Best regards.
Alvaro.

#5 Posted: 7/6/2020 4:00:32 AM

Martin Kraska

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