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   sci.math.symbolic      Symbolic algebra discussion      10,432 messages   

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   Message 9,874 of 10,432   
   Nasser M. Abbasi to clicliclic@freenet.de   
   Re: hitting the FriCAS jackpot   
   02 Apr 18 01:17:35   
   
   From: nma@12000.org   
      
   On 4/1/2018 2:37 PM, clicliclic@freenet.de wrote:   
   >   
   > Here is another "moderately-sized square-root pseudo-elliptic integral   
   > on which FriCAS is still known to fail".   
   >   
   > Being confronted with:   
   >   
   > setSimplifyDenomsFlag(true)   
   >   
   > integrate((x^2 + 2*x - 3)/((x^4 - 8*x^3 + 94*x^2 + 552*x + 657)   
   > *sqrt(x^3 - 15*x - 22)), x)   
   >   
   > the current web-interface version 1.3.2 responds with:   
   >   
   >>> Error detected within library code:   
   >     Not integrable (provided residues have no relations)   
   >   
   > Why can't FriCAS establish non-integrability here?   
   >   
   > Martin.   
   >   
      
   FYI, same error shows up in Fricas 1.3.3 on Linux.   
      
   --Nasser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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