Hi,

I have a problem with the integral. Please find the exemplary attached to this post. I have defined several variables and their units. In my opinion, everything is OK but SMath does not solve it when the temperature is defined as a vector T, or solve only the first integral if temperatures are defined separately (as T.1 and T.2). Can you explain to me why SMath cannot solve this integral?

int_issue.sm (8 KiB) downloaded 41 time(s).

Best regards,
dzon_doe

Wrote

Can you explain to me why SMath cannot solve this integral?

Sure it integrates an integrand and more.

int_issue.sm (11 KiB) downloaded 40 time(s).

Wrote

Sure it integrates an integrand and more.

To be honest, your explanation is not clear for me but I noticed that you removed all units. And in my sheet, it also works. Does the units the source of the problem?


Best regards,
dzon_doe

Wrote

To be honest, your explanation is not clear for me but I noticed that you removed all units. And in my sheet, it also works. Does the units the source of the problem?

You first wrote:
Can you explain to me why SMath cannot solve this integral ?
Now you reply: And in my sheet it also works.
Maths are unitless, so I reject carrying units,
there are very many instances not supporting units.
Units were discussed ad nauseum in Mathsoft forum,
in > 125000 exchanges: not a single work sheet in units.

Cheers ... Jean

Hi. Try this:



Best regards.
Alvaro

Maxima can handle integrals with units. Yet the restriction applies that the integration variable must be undefined.

int_issue_Kr_units.sm (10 KiB) downloaded 46 time(s).

Wrote

Maxima can handle integrals with units. Yet the restriction applies that the integration variable must be undefined

Native Smath does it in much greater elegance.

int_issue [Transit Method].sm (9 KiB) downloaded 38 time(s).

Refreshed version managed from annoying units



Integral 0000000 Transit-Units.sm (23 KiB) downloaded 32 time(s).