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Best answer by Werner_E

ADDENDUM

 

By replacing the factorials by the gamma function I get the very same WRONG result in Prime 6, too!

Werner_E_0-1616182014022.png

Here is another "nice" experience I had while playing around (still in P6) - its reproducable

Werner_E_0-1616183436869.png

 

 

3 replies

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LucMeekes23-Emerald IV
23-Emerald IV
March 19, 2021

Mathcad 11/Maple:

LucMeekes_0-1616138941567.png

can do without an assumption.

How does Prime7 fare without the 'assume n=integer' ?

 

Luc

 

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 19, 2021

M15 vs MP7.jpg

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LucMeekes23-Emerald IV
23-Emerald IV
March 19, 2021

I'd say, report this crime.

 

Success!
Luc

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-MFra-21-Topaz IIAuthor
21-Topaz II
March 19, 2021

Similar complaints have been posted in the community for years. It seems to me that Werner and others, from time to time, report it to PTC but without getting anything although, if you check, some old errors (see photo) have been corrected, but not all.

errors.jpg

There is a more complete list.
((Note that all other software suffer from similar errors but not the same)...)

W
Werner_E25-Diamond I
25-Diamond I
March 19, 2021
@-MFra- wrote:

Similar complaints have been posted in the community for years. It seems to me that Werner and others, from time to time, report it to PTC

Yes, I reported a few bugs in the past, but I stopped doing so a long time ago as I don't think that it makes any sense. It seems that PTC is resistant to advice  (or unwilling?). You can also tell it from the fact that in contrast to some other companies they don't encourage their customers to turn in bug reports. Actually there is no official way of doing other than opening a support ticket (only open to customers who pay their maintenance fee regularly). But I don't need support, I'd just need a simple and uncomplicated way to inform the development team about bugs in their software, hoping that they are able to fix them for the next release or release an intermediate bug fix release. I have given up hope ...

F
FredLusk14-Alexandrite
14-Alexandrite
March 19, 2021

MP5 works.  So I guess the new symbolic solver isn't actually a solver, symbolic or otherwise. ☹️

    F
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    March 21, 2021

    MP5 is the old, MuPad engine.  MP6 has (I believe) the new engine AND the old MuPad engine and you may choose and switch between them.  MP7 has only the new in-house built engine.

     

    MPE (mathcad Prime Express) is FREE and quite impressive for free:

    • It has no exasperating symbolic engine 
    • It will not write or execute a program
    • It doesn't have an annoying, buggy, frustrating, and s l o w  third party graphing utility.  (So, while you can't really do 3D graphing, you CAN (thanks to contributions from some ingenious adventurers in Mathcad) actually put gridlines, including log lines, on a plot. Labels are still up to you.
    • It poses interesting quizes: "How do you take the mean or median of a vector of values?"  (The built-in functions are disabled "premium" features; roll your own.)
    • While it will solve for roots of an equation, it does not write or execute solve blocks

    Can anyone remember (Mathcad 5?) when Mathcad first began to accept programs?

    S
    StuartBruff23-Emerald V
    23-Emerald V
    March 22, 2021
    @Fred_Kohlhepp wrote:

    Can anyone remember (Mathcad 5?) when Mathcad first began to accept programs?

    I think it was Mathcad 6.0 Plus, Fred. but not standard M6.

     

    I believe it was only available in Professional versions of M7 and M8 as well, so it was a "premium" feature even back in the Good Old Days!   I guess M11 spoiled us ...

     

    Stuart

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