From: hebisch@math.uni.wroc.pl   
      
   clicliclic@freenet.de wrote:   
   >   
   > ... and another quick FriCAS 1.2.3 on-line experiment:   
   >   
   > integrate((a + b*x + c*x^2)/((1 - x + x^2)*(1 - x^3)^(1/3)), x)   
   >   
   > >> Error detected within library code:   
   >    integrate: implementation incomplete   
   >    (residue poly has multiple non-linear factors)   
   >   
   > Is there no workable treatment of "multiple non-linear factors" other   
   > than Kauer's Groebner-basis heuristics?   
   >   
      
   This one can be handled by simple method: since the integrand   
   is linear in a, b, c each term can be integrated separately.   
   FriCAS can integrate each part, however this is slow   
   (I used 'setSimplifyDenomsFlag(true}' before integration to   
   get resonable time) and result is ugly (sum over roots of   
   sextic of large function).   
      
   --   
                                 Waldek Hebisch   
   hebisch@math.uni.wroc.pl   
      
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