MaplePrimes - answers and comments on Question, Analytically solve a 4th order eqn with five parameters.

We need the equation

JacquesC — Fri, 04 Sep 2009 19:39:11 Z

Without the actual equation, we really can't help. Post a link to a worksheet, that's the best way to communicate long equations in such a way that others here may be able to experiment with it.

The analytic formulas for

edgar — Sat, 05 Sep 2009 01:04:07 Z

The analytic formulas for 4th degree are SO long and cumbersome that they are of NO practical use in almost every case. Just leave them as RootOf expressions. --- G A Edgar

View 11412_eqn1.mw on

TheAnimal — Mon, 07 Sep 2009 16:45:40 Z

View 11412_eqn1.mw on MapleNet or Download 11412_eqn1.mw
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The above is the equation. thanks for your advice Edgar.

Indeed

JacquesC — Mon, 07 Sep 2009 17:18:00 Z

I looked at your equation. There does not seem to be any symmetries (at least using the form you have given), so that the roots would correspond to the general form of the quartic -- completely useless as was previously posted. Using the implicit form (RootOf) is most definitely the best thing to do.

Can you tell us what you're really trying to do with the roots of this equation?