From: Albert_Rich@msn.com   
      
   On Tuesday, June 2, 2015 at 7:26:38 AM UTC-10, clicl...@freenet.de wrote:   
      
   > How is one expected to reconcile your "over 99%" (formerly 99.79%) of   
   > successful integral evaluations with the 95.5% listed at Nasser's   
   > website for Rubi 4.7?   
      
   Nasser's website says an integrator fails when it returns a result involving   
   the integration function (Integrate, int or Int) EVEN when no closed-form   
   antiderivative exists.  Obviously this will increase the failure rate of all   
   the integrators tested.   
      
   If the optimal antiderivative involves the function Int, no closed-form   
   antiderivative exists (unless there is an error in the Rubi test suite).    
   Therefore, I recommend Nasser's test program check to see if the optimal   
   antiderivative involves Int, and if    
   so judge antiderivatives involving the integration function a success.   
      
   Of course, if the test program encounters a problem whose optimal   
   antiderivative involves Int AND one of the systems returns a valid closed-form   
   antiderivative, that problem should be flagged so I can correct the optimal   
   antiderivative in the test suite.   
      
   Albert   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)