On Wed, Aug 26, 2009 at 2:38 PM, Jaakko<matikkaja...@netti.fi> wrote:
>
>> If you don't have numbers you can do it using FriCAS, which is optional
>> in sage:
>>
>> sage: fricas("ratDenom(1/(1+3^(1/2)+5^(1/4)+7^(1/6)))")
>> sage: fricas("ratDenom(1/(1+a^(1/2)+b^(1/3)))")
>>
>> Martin
>
> How do I install FriCAS? I installed sage by typing
> sudo apt-get install sagemath but
> sudo apt-get install fricas outputs
> E: Couldn't find package fricas.
> I'm using Ubuntu 9.04.

Try

sage -i fricas-1.0.3.p0

I found this name by doing

  sage -optional

William

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