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14-Alexandrite
Apr 15, 2026 2:03 PM UTC
Solved

symbolic evaluation in prime 11.0.1.0

Hello,

I have tried to upload the mathcad file, but it does not allow me. The following was working in mathcad 15, but it does not evaluate in prime

 

Thanks,
Sam

Werner_E
Werner_EAnswer
25-Diamond I
Apr 15, 2026 11:32 PM UTC

I am not sure what the problem was, but I see when I load your file that you experienced a “variable not defined” error.

But when I simply let your sheet recalculate (Ctrl+F5) the symbolic evaluations work as expected:

The two substitutions are not taken into account because you used the Boolean comparison operator instead of an assignment/definition.
If you use the assignment operator, you will receive error messages, but these come from the numerical engine in Prime; the symbolic evaluation, however, works as expected.

 

Or perhaps you actually intended to use the assignment operator in the symbolic evaluation as well? Also For example Iwp := 2*… .

15 replies

23-Emerald V
Apr 15, 2026 5:36 PM UTC

This isn't rocket science (at least, not for Mathcad 11):

Have you defined any of Rm, t, or theta awkwardly?

 

Success!
Luc

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SFares14-AlexandriteAuthor
14-Alexandrite
Apr 15, 2026 5:40 PM UTC

Hi Luc,
This is how I defined them:
 

 

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23-Emerald V
Apr 15, 2026 8:06 PM UTC

Those aren’t definitions, they are equations (bold =). For a definition I would expect =:

 

Success!
Luc

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15-Moonstone
Apr 15, 2026 5:50 PM UTC

Similar to Luc’s (real) Mathcad 11, Prime 12 handles correctly:

and Prime 11.0.1.0 :

 

 

Can you upload your worksheet in a zipped file?

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SFares14-AlexandriteAuthor
14-Alexandrite
Apr 15, 2026 5:56 PM UTC

I have replied but I don’t see my answers.
 

 

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SFares14-AlexandriteAuthor
14-Alexandrite
Apr 15, 2026 6:12 PM UTC

Here is the zipped file. Thanks!

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