Possible bug - copying and pasting from output not retaining parentheses

  • AllanKafka

    AllanKafka - 2013-09-02

    Hi all! Please excuse me if that's not the right place for discussing this sort of thing.
    I recently encountered a behaviour I was not expecting in wxMaxima.
    I wrote a simple equation, such as


    executing the line gave the same expression as output, with better formatting.
    I then proceeded to substitute some variables with their values - in order to do so I copied the output in a new line containing the subst() function, in order to get the line to look like this:

    subst[epsilon_su=.01, xi=.18532, deltaprimo=0.09756], 

    (newline for easier reading).
    Notice anything? The parentheses in the denominator have disappeared, leading to a completely wrong result in the end.
    I don't think this should be the default behaviour; I think the copied output should retain the same mathematical meaning as the MathML-like display when pasted.

    EDIT: I am using wxMaxima 13.04.0 on Mac OS X 10.6.8.

    Am I missing anything?
    Thank you in advance.


    Last edit: AllanKafka 2013-09-02
  • Ago77

    Ago77 - 2013-09-07

    Not sure I understand the question, but ":" or ":=" should be used in the definitions, not "=". This works fine:
    epsilonprimo_s: epsilon_su/(1-xi)*(xi-deltaprimo);

    subst([epsilon_su=.01, xi=.18532, deltaprimo=0.09756], epsilonprimo_s);


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