Axel Vogt schrieb:   
   >   
   > On 09.02.2016 23:55, clicliclic@freenet.de wrote:   
   > >   
   > ...   
   >   
   > > Value = "FriCAS 1.2.7 compiled at Tue Sep 29 13:45:04 UTC 2015"   
   > > returns   
   > > integrate(1/(x*(x^2 - 3*x + 2)^(1/3)), x)   
   > >>> Error detected within library code:   
   > >     impossible   
   > >   
   > > Boooooooooooooooooooooooooo.   
   >   
   > Maple also does not do it. What is the good approach?   
      
   This depends on your needs and preferences:   
      
   Hard-boiled politicos might end up conspiring to have Barry Trager   
   abducted and an interrogation team put to work on him in the Polish   
   backwoods.   
      
   Practically-minded realists should try to implement Manuel Kauers'   
   Groebner-basis scheme of 2008. If that turns out to fail on the present   
   integrand they could ask him to provide something better, at the threat   
   of exposure if necessary.   
      
   Nostalgic purists may want to analyze transformation properties of the   
   integrand under Moebius transformations that map radicand roots onto   
   each other, thus adapting Goursat's 1887 approach from square roots of   
   quartics (and cubics) to cube roots of cubics (and quadratics).   
      
   Rubi wouldn't be Rubi if it didn't come up with still another solution;   
   lazybones could simply rest up and wait for this to happen. Meanwhile,   
   beware of gravitational waves!   
      
   Martin.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)