On 03/10/2015 06:26 PM, Dima Pasechnik wrote:
> (1) -> integrate(x/(x^3-x+1),x)
> 
>    (1)
>            +-----------+
>             |             2
>          4\|69%%F0  + 4
>       *
>          atan
> [etc...]
> 
>                                          Type: 
> Union(Expression(Integer),...)
> 
> How does one extract the definition of F0? (Or is it %%F0?)

Does this help a bit?

http://axiom-wiki.newsynthesis.org/ExampleIntegration

(1) -> f := x/(x^3-x+1)

             x
   (1)  ----------
         3
        x  - x + 1
                                          Type:
Fraction(Polynomial(Integer))
(2) -> i := integrate(f, x);

                                         Type:
Union(Expression(Integer),...)
(3) -> D(i, x)

             x
   (3)  ----------
         3
        x  - x + 1
                                                    Type:
Expression(Integer)
(4) -> 23*%%F0^3 + %%F0 + 1

   (4)  0

Admittedly, it would be better, to tell the user how %%F0 is defined.

Ralf

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