I didn't try it but maybe this has the expected effect:
texput (nounify (diff), ...);
HTH
Robert Dodier
On 2/11/11, dlakelan <dlakelan at street-artists.org> wrote:
> I am working on deriving a partial differential equation for a physical
> model. The expression is long and has partial derivatives of all sorts
> of things, typesetting it by hand is a pain. I've used "texput" to
> describe the tex output for all the various variables, but I want a
> different format for derivatives. Specifically I want diff(a,b,1) to be
> typeset as "\del{a}{b}" which is a macro defined in my LaTeX file that
> automatically sets up a partial derivative for the two variables.
>
> I tried using texput to change the output of diff but it doesn't work:
>
> texconvdiff(arg) := block([a,b,c],[a,b,c]: args(arg),
> concat("\\del{",tex1(a),"}{",tex1(b),"}"));
>
> texput(diff,texconvdiff);
>
> tex('diff(a,b)); <<<<< doesn't output modified derivative
> notation***************
>
> Instead I've set up a pattern rule to replace diff(a,b,1) with del(a,b)
> and diff(a,b,2) with delsq(a,b) and then set the texput for those
> functions, but I wonder why it is not possible to change the way that
> maxima outputs derivatives?
>
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