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

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   Message 9,440 of 10,432   
   clicliclic@freenet.de to clicliclic@freenet.de   
   Re: alarum: Risch integrator fails to di   
   31 May 17 18:57:16   
   
   clicliclic@freenet.de schrieb:   
   >   
   > clicliclic@freenet.de schrieb:   
   > >   
   > > A state-of-the-art implementation of a Risch integrator   
   > >   
   > > )version   
   > >   
   > > Value = "FriCAS 1.3.0 compiled at Thu Sep  1 17:01:37 UTC 2016"   
   > >   
   > > responds to   
   > >   
   > > integrate((1 + x)/((1 + x + x^2)*(a + b*x^3)^(1/3)), x)   
   > >   
   > > with   
   > >   
   > > >> Error detected within library code:   
   > >    catdef: division by zero   
   > >   
   >   
   > Meanwhile, the FriCAS version has advanced to 1.3.2, the web interface   
   > is running version 1.3.1, and the division by zero no longer occurs   
   > when the integral is submitted to the web interface. Its computation,   
   > however, exceeds the 5-minute timeout imposed by the interface (Proxy   
   > Error - Reason: Error reading from remote server). Does FriCAS now   
   > manage to return a correct antiderivative eventually?   
   >   
      
   Oh my - has FriCAS been chewing on this integral for two weeks already?   
      
   Martin.   
      
   --- SoupGate-Win32 v1.05   
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