Hello everyone,

I’m trying to calculate an indefinite integral.sm (4,58 KiB) scaricato 1032 volta(e).in SMath using the Maple plugin, as shown in the attached file.
However, the correct result should be:


6t^2-2*t^(3/2)


and I can’t get this result from Maple inside SMath — it returns a different expression instead.

Could someone please help me understand why this happens or how to make the Maple integration work properly?

Thank you in advance.

Sérgio Marques

Hi. The default variable in Maple is complex, hence the difficulties when requesting simplifications. However, this syntax makes it somewhat lacking in rigor, which can lead to incorrect results. Therefore, it should be used with caution.



Another way is to use assume in maple, but I don't know how to do it from SMath.

Best regards.
Alvaro.

The Maxima kernel asks in such cases for the sign of the limit, the interface catches the question and responds with "yes". In the result, a corresponding message is included.

You can avoid the message using assume().

In the maple plugin this would require to inject assume and the integration in a single maple call, as the maple session does not persist between the calls, while the Maxima session is persistent in the background. There are pros and cons with that approach.

indefinite integral.sm (7,02 KiB) scaricato 1048 volta(e).

Ummm, maple did it already correct.
Just change optimization to none.

Hello

It really was enough to change Optimization > None for the result to appear correctly.

Thank you very much, everyone!