From: didier.oslo@hotmail.com   
      
   With Rubi 4.14.7 on MMA 11.1.0, I cannot get the antiderivative:   
   Int[JacobiDN[x, m]^2 - EllipticE[m]/EllipticK[m], x]   
   and I get instead:   
   -((x EllipticE[m])/EllipticK[m]) + Int[JacobiDN[x, m]^2, x]   
      
   I expected the result:   
   JacobiZeta[x, m]   
      
   How could I get it?   
   (Integrate can do it, but returns a complicated result.)   
      
   Actually, I have to compute a bunch of antiderivative  of that type   
   (products of Jacobian elliptic functions). MMA produces useless   
   complicated results (when it works), so I was expecting that Rubi   
   would be more helpful.   
      
   Thanks for advises.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)