On Tue, 23 Mar 2010 05:07:05 -0700 (PDT)
tk <tobi...@web.de> wrote:
> I tried to do some calculations and used a self-defined function.
> After that, I wanted to change it to another function like sin or
> just
> a constant.
> I am using the binary version on Ubuntu Karmic.
>
> What I got was the following:
> ----------------------------------------------------------------------
> | Sage Version 4.3.3, Release Date: 2010-02-21 |
> | Type notebook() for the GUI, and license() for information. |
> ----------------------------------------------------------------------
> sage: var('t1,t2,t3')
> (t1, t2, t3)
> sage:
> f1=function('f1',x)
> sage:
> et1=t1==f1(x=t2)*t3
> sage:
> et1.substitute_function(f1,sin)
> t1 == t3*f1(t2)
>
> Didn't I get how it works?
This works:
sage: var('t1,t2,t3')
(t1, t2, t3)
sage: function('f1')
f1
sage: et1=t1==f1(t2)*t3
sage: et1
t1 == t3*f1(t2)
sage: et1.substitute_function(f1,sin)
t1 == t3*sin(t2)
Cheers,
Burcin
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