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Please use the linear form of expressions -- this bug reporting

system loses formatting. I believe the original expression was

(432*a^2*y^2-504*a^4*y^4+6*a^6*y^2-3*a^9)

/

(2 * (y^2 + a^2) ^(11/2) )

Is that right?

In 5.9.0/gcl/Windows, I don't get the error you report. ON

the other hand, Maxima stupidly asks whether y is pos or neg

(but y only appears as y^2). It does give a result in terms of

a after a few questions. I have no idea whether this result is

correct.