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Re: Roots of an equation

  • To: mathgroup at
  • Subject: [mg6644] Re: [mg6582] Roots of an equation
  • From: "Preferred Customer" <sherman.reed at>
  • Date: Wed, 9 Apr 1997 00:34:05 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

eq=1/x^4 +1/y^2 +2 - ( 1/(y^2 - x^2) )^(5/3)


the above code lets me look at the shape of y(x).  varying resx, the x
lets one look at the code over any range. res is the solutions.

I use 
ListPlot[res, PlotJoined->True] to see the results.

It appears there is no root.  At x=0, y is indeterminate.

I then set y=0 by


I then use FindRoot[eqy==0,{y,.1} to see if a solution exists.
there is none.

hope this helps.

sherman reed

> From: Jaimee Tahsiri <jtt at>
To: mathgroup at
> To: mathgroup at
> Subject: [mg6644] [mg6582] Roots of an equation
> Date: Friday, April 04, 1997 1:11 AM
> I appreciate it if someone in your group to write me a short mathematica
> program to solve the real roots of this equation.
> 1/x^4 +1/y^2 +2 = ( 1/(y^2 - x^2) )^(5/3)
> A million thanks to anyone that can help me.

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