On Monday, February 18, 2019 at 12:46:02 PM UTC-6, clicl...@freenet.de wrote:   
   > Hello,   
   >   
   > last year (on Sunday, 28th January 2018 in the sci.math.symbolic thread   
   > "More teething help"), Nasser M. Abbasi observed that FriCAS randomly   
   > divides by zero when solving:   
   >   
   > integrate(((2*a - 1)*x - a)   
   >   /((x - a)*sqrt((2*a - 1)*x^3 - (a^2 + 2*a - 1)*x^2 + a^2*x)), x)   
   >   
   > I cannot reproduce this on the current web interface version of FriCAS.   
   > Has this problem gone away or been corrected?   
   >   
   > Martin.   
      
   Hello Matrin;   
      
   Yes, it looks like it is fixed:   
      
   >fricas   
                          FriCAS Computer Algebra System   
                               Version: FriCAS 1.3.5   
                      Timestamp: Thu Feb 14 03:15:26 CST 2019   
   (1) -> setSimplifyDenomsFlag(true)   
   (2) -> )set output algebra on   
   (2) -> ii:=(((2*a - 1)*x - a)/((x - a)*sqrt((2*a - 1)*x^3 - (a^2 + 2*a -   
   1)*x^2 + a^2*x)), x);   
   (3) -> unparse(ii::InputForm)   
      
     "[(((2*a+(-1))*x+(-1)*a)*((2*a+(-1))*x^3+((-1)*a^2+(-2)*a+1)*x^2+a^2*x)^(1/2)   
     )/((2*a+(-1))*x^4+((-3)*a^2+(-1)*a+1)*x^3+(a^3+3*a^2+(-1)*a)*x^2+(-1)*a^3*x),   
     x]"   
      
   --Nasser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)