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Try to run the following:

>restart;
>d := conjugate(u)*conjugate(y)+conjugate(v)*conjugate(x);
>z := conjugate(f)/d+conjugate(G)*w*conjugate(w)*conjugate(y)/d;
>z2 := simplify(z);

and you will get correct answer

                         _        _   _ _
                         f        G w w y
                     --------- + ---------
                     _ _   _ _   _ _   _ _
                     u y + v x   u y + v x
                          _   _ _   _
                          G w w y + f
                          -----------
                           _ _   _ _
                           u y + v x

But try to run

>restart;
>d := conjugate(u)*conjugate(y)+conjugate(v)*conjugate(x);
>z := conjugate(f)/d+G*w*conjugate(w)*conjugate(y)/d;
>z2 := simplify(z);

and it will never be computed.

New features in Maple 17 are good of course. But it should be great if Maple team improves algorithms of calculations too.

Maple_17_fault.mw



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