oldk1331@gmail.com schrieb:   
   >   
   > Like your previous examples, FriCAS can solve the first two cases   
   > in elementary functions when a=0, b=0 separately, then do a linear   
   > combination.  (with setSimplifyDenomsFlag(true), the result is not   
   > too long and returns in a few seconds).   
   >   
   > I know there are problems in FriCAS dealing with integrals with   
   > symbolic parameters, probably because when computing resultants, the   
   > symbolic parameters don't cancel out like numbers, resulting in very   
   > big polynomials.   
   >   
      
   However, when the role of a parameter is trivial, such as that of a in   
   integrate(a/((3 - x^2)*(1 - 3*x^2)^(1/3)), x), one would expect that its   
   role remains so when it ends up in properly conceived resultants.   
      
   Could it be that integrate(b*x/((3 - x^2)*(1 - 3*x^2)^(1/3)), x) and   
   integrate(b*x/((2 - x^2)*(x^2 - 1)^(1/4)), x) are preprocessed to remove   
   or simplify the radical? This could explain why the computations are   
   here not obstructed by the trivial parameter b.   
      
   Martin.   
      
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