Problem with integral (again)

Problem with integral (again) - Definite Integral - Messaggi

#1 Pubblicato: 15/12/2022 12:03:46
Peter Pal Ther

Peter Pal Ther

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Hi!

I have the following code, and the last integral is not solved by the program. I did not find any solution.
Can you explain me, what is the problem?

Thanks a lot!
Bye
Pali

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#2 Pubblicato: 15/12/2022 14:31:15
Jean Giraud

Jean Giraud

983 apprezzamenti in 6.866 post.

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Wrote

I have the following code, and the last integral is not solved by the program. I did not find any solution.
Can you explain me, what is the problem ?


In some way doctored in red. Setup the integrator scalar wrt 'x'.
Cheers ... Jean.

HF.sm (84,02 KiB) scaricato 1307 volta(e).
#3 Pubblicato: 15/12/2022 15:01:55
Alvaro

Alvaro

1.139 apprezzamenti in 1.805 post.

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Wrote


Can you explain me, what is the problem?



Hi Pali. At this time, you can't use if(..) inside an integral, use cases(...) instead. Also, SMath's integral new version can handle better units.

HF.sm (73,15 KiB) scaricato 1308 volta(e).

Best regards.
Alvaro.
#4 Pubblicato: 16/12/2022 06:41:10
Peter Pal Ther

Peter Pal Ther

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Hi Alvaro,

thanks a lot! It works fine. Thank you.
What do you mean: new version of integral?

Best regards
Pali
#5 Pubblicato: 16/12/2022 06:42:49
Peter Pal Ther

Peter Pal Ther

0 apprezzamenti in 3 post.

Gruppo: User

Wrote


In some way doctored in red. Setup the integrator scalar wrt 'x'.
Cheers ... Jean.

HF.sm (84,02 KiB) scaricato 1307 volta(e).



I do not really understand what you did, but thanks for your help as well.

#6 Pubblicato: 16/12/2022 09:37:18
Jean Giraud

Jean Giraud

983 apprezzamenti in 6.866 post.

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I do not really understand what you did
1. recast if/else ► if/otherwise.
2. made ∫ scalar wrt 'x' for local/vectorize

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#7 Pubblicato: 16/12/2022 14:49:11
Alvaro

Alvaro

1.139 apprezzamenti in 1.805 post.

Gruppo: User

Wrote


What do you mean: new version of integral?



Hi Pali. In the "new" version of the integral it puts the units of the result correctly, while before some corrections had to be made. From "list of changes" here: Defined Integral supports units now.

Best regards.
Alvaro.


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Davide Carpi 16/12/2022 18:26:00
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