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FB_107959225-Regular Member
5-Regular Member
Jun 16, 2025 2:35 PM UTC
Solved

numer & denom oddities in MathCAD Prime9.0

Dear all,

 

I'm exploring the functions:

  • numer
  • denom

And I've encountered the "oddities" in the joined MathCAD file (see what highlighted in pale yellow and the text; in pale blue some reference results for information)

 

To be honest I suspect multiple bugs...

 

If I'm wrong (i.e. we're not dealing with bugs...) , can someone explain me the logic under the quoted functions behavior, because I really cannot understand...

 

Many thanks in advance & Best Regards 

Werner_E
Werner_EAnswer
25-Diamond I
Jun 16, 2025 3:05 PM UTC

The "hidden logic" is that sometimes the symbolics applies automatic simple simplifications and nominator and denominator are taken from the simplified expression:

Function 1:

Werner_E_0-1750086028084.png

Function 2:

Werner_E_1-1750086082370.png

Function 3:

Werner_E_3-1750086272929.png

Function 4

Werner_E_5-1750086740796.png

Prime 9 sheet attached

 

BTW, the 'logic' is not always that clear. For example

Werner_E_6-1750087126900.png

 

Werner_E_7-1750087380753.png

 

 

 

 

 

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1 reply

Werner_E
Werner_E25-Diamond IAnswer
25-Diamond I
Jun 16, 2025 3:05 PM UTC

The "hidden logic" is that sometimes the symbolics applies automatic simple simplifications and nominator and denominator are taken from the simplified expression:

Function 1:

Werner_E_0-1750086028084.png

Function 2:

Werner_E_1-1750086082370.png

Function 3:

Werner_E_3-1750086272929.png

Function 4

Werner_E_5-1750086740796.png

Prime 9 sheet attached

 

BTW, the 'logic' is not always that clear. For example

Werner_E_6-1750087126900.png

 

Werner_E_7-1750087380753.png

 

 

 

 

 

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