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Offline Razonar  
#1 Posted : 06 July 2020 01:17:35(UTC)
Razonar


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Hi. sum have an issue for symbolics evaluations.

Clipboard02.gif

Clipboard01.gif

Best regards.
Alvaro.
Offline Jean Giraud  
#2 Posted : 06 July 2020 01:36:36(UTC)
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Just check , Alvaro.
Between yourself and me ... we are old kookoo in those games !

VectorSum.PNG

Offline overlord  
#3 Posted : 06 July 2020 02:51:36(UTC)
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Originally Posted by: Razonar Go to Quoted Post
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.

symbolic.png
thanks 1 user thanked overlord for this useful post.
on 06/07/2020(UTC)
Offline Razonar  
#4 Posted : 06 July 2020 09:45:56(UTC)
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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.
Online mkraska  
#5 Posted : 06 July 2020 10:00:32(UTC)
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sum.png
sum.sm (12kb) downloaded 7 time(s).
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://en.smath.info/wi...th%20with%20Plugins.ashx
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on 06/07/2020(UTC)
Offline Jean Giraud  
#6 Posted : 06 July 2020 13:17:28(UTC)
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I see no bug ...

NOBUG.sm (31kb) downloaded 10 time(s).
Offline Razonar  
#7 Posted : 06 July 2020 18:48:31(UTC)
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Hi. Some notes attached.

sum.sm (21kb) downloaded 8 time(s).
sum.pdf (67kb) downloaded 15 time(s).

Best regards.
Alvaro.
Offline Jean Giraud  
#8 Posted : 07 July 2020 13:34:39(UTC)
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Vsum.PNG
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