I am using wxmaxima 0.8.4 with maxima 5.20.1
I checked it. The example I sent really does work. But a slightly different
example does not:
(%i111) f1:-1/2*beta*(V/V0)^ge*T^2;
(%o111) -(beta*T^2*(V/V0)^ge)/2
(%i112) f2:diff(-Fe,V);
(%o112) (beta*ge*T^2*(V/V0)^ge)/(2*V)
(%i113) f3:(V/Vo)^(ge-1);
(%o113) (V/Vo)^(ge-1)
(%i114) f4:f2/f3;
(%o114) (beta*ge*T^2*(V/Vo)^(1-ge)*(V/V0)^ge)/(2*V)
Why doesn't it simplify ?
I tried ratsim, trigsimp and some others.
Thanks
Eli
On Wed, Sep 29, 2010 at 6:13 PM, Stavros Macrakis <macrakis at alum.mit.edu>wrote:
> What version of Maxima are you using? This works correctly in 5.20.1:
>
> (%i1) f1:(x/x0)^a;
> (%o1) (x/x0)^a
> (%i2) f2:(x/x0)^(a-1);
> (%o2) (x/x0)^(a-1)
> (%i3) f3:f1/f2;
> (%o3) x/x0
>
> For more complicated simplifications which Maxima does not perform
> automatically, there is a large number of functions to try for reorganizing
> expressions. Some that are worth trying are ratsimp, factor, factorsum,
> expand, multthru. To get more information on these, type, e.g.
>
> (%i4) ? ratsimp
> -- Function: ratsimp (<expr>)
> -- Function: ratsimp (<expr>, <x_1>, ..., <x_n>)
> Simplifies the expression <expr> and all of its subexpressions,
> including the arguments to non-rational functions. The result is
> ...
>
> On Wed, Sep 29, 2010 at 03:58, Eli Brosh <ebrosh1 at gmail.com> wrote:
>
>> Hello,
>> I hope people on the maxima mailing list can help me with the following.
>>
>> I defined the functions f1 and f2 as:
>> (%i53) f1:(x/x0)^a;
>> (%o53) (x/x0)^a
>> (%i48) f2:(x/x0)^(a-1);
>> (%o48) (x/x0)^(a-1)
>>
>> Now, f3 is the division:
>> (%i52) f3:f1/f2;
>> (%o52) x^a*(x/x0)^(1-a)
>>
>> How can I force maxima to simplify f3 down to (x/x0) ?
>> Now this is a simple example. What can I do with more complex expressions
>> where I do not have a good idea about the end result?
>>
>> Thanks,
>> Eli
>>
>>
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>>
>>
>