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

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   Message 9,179 of 10,432   
   clicliclic@freenet.de to oldk1331@gmail.com   
   Re: FriCAS web interface failure   
   15 Oct 16 18:38:25   
   
   oldk1331@gmail.com schrieb:   
   >   
   > Martin and Nasser, FYI:   
   >   
   > For the problem   
   >     integrate((a + b*x)/((3 + x^2)*(1 - x^2)^(1/3)), x)   
   > and   integrate((a + b*x)/((3 - x^2)*(1 + x^2)^(1/3)), x),   
   >   
   > both fricas and mma can do the later part in elementary functions:   
   > namely   
   >     integrate((b*x)/((3 + x^2)*(1 - x^2)^(1/3)), x)   
   >   
   > For the first part, mma gives result contains AppellF1, fricas can do   
   >     integrate(1/((3 + x^2)*(1 - x^2)^(1/3)), x)   
   > but gives a very long but elementary result.   
      
   Are you about to give up on these cube-root integrands? Integrals that   
   must be split manually in order to be evaluated successfully should be   
   counted as 100% failed in my view - an Algebra System should go beyond a   
   Table of Integrals with only so many entries.   
      
   Sadly, I am now finding that the FriCAS web interface refuses to respond   
   after I submitted a pseudo-elliptic integral mentioned in a post of   
   Sat, 20 Aug 2016 08:46:09 +0200 to another thread earlier today while   
   forgetting to invoke setSimplifyDenomsFlag(true) first:   
      
     integrate((1 + x)/((1 + x + x^2)*(2 + x^3)^(1/3)), x) = ?   
      
   Offering his most contrite apologies,   
      
   Martin :((.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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