Converting a function to one

To avoid ev(..., nouns), substitute a lambda form for the function:

(%i2) g(x) := 1$

(%i3) subst(g,f, f(x));
(%o3) g(x)

(%i4) subst(f = lambda([s],1), f(x));
(%o4) 1

Barton

-----maxima-bounces at math.utexas.edu wrote: -----


>I?have?an?expression?containing?many?calls?to?the?same
>function?say
>
>f(someargs)+f(someotherargs)/f(somestuff)
>
>and?I
>want?to?know?what?is?the?fastest?way?to?change?all?of?the?occurrences?of
>this
>function?to?the?number?1.??I?want/need?to?do?this?in?my?program?to
>eliminate?pwdelta(someargs)'s?inside?of?an?integral?and?so?that?is?the
>reason
>for?my?question.??I?have?been?doing?it?a?silly?way?by?creating?a?new
>function?and?using?opsubst(g=pwdelta,?expr)?where?g?is?defined?g(x):=1.
>Is
>that?the?best?way???It?is?pretty?fast,?but?is?there?a?better?way???One
>problem?I?get?is?that?I?have?to?do?an?ev(opsubst(g=pwdelta,?expr),?nouns)
>to?get
>Maxima?to?change?the?g's?to?a?1?and?I?have?been?observing?in?the?list?that
>ev()
>is?a?problem?function.
>
>Thanks?for?any?help,
>
>Rich
>_______________________________________________
>Maxima?mailing?list
>Maxima at math.utexas.edu
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