"Nasser M. Abbasi" schrieb:   
   >   
   > The third one gives Fricas some trouble   
   >   
   > ii:=integrate((x*(2*a - 1)-a)/((x - a)*sqrt(x^3*(2*a - 1)-x^2*(a^2 + 2*a -   
   1) + a^2*x)), x)   
   >   
   >     >> Error detected within library code:   
   >     catdef: division by zero   
   >   
      
   Boooooooooo!   
      
   Martin.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)