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Re: Solution of this equation

  • To: mathgroup at
  • Subject: [mg20650] Re: [mg20629] Solution of this equation
  • From: BobHanlon at
  • Date: Sun, 7 Nov 1999 02:09:54 -0500
  • Sender: owner-wri-mathgroup at


Whether or not the solutions are all real or the imaginary parts are very 
small will depend on the values of Pr and Tr. [Note that Tr is a protected 
symbol name for the trace of a matrix or tensor list.]

If you are solving this with specific values and the imaginary parts are 
truly small, then use Chop.

Bob Hanlon

In a message dated 11/4/1999 8:04:15 AM, dhr at writes:

>Can anyone offer insight here?
>This Mathematica expression gives 3 solutions to the equation.
>Solve[Pr == (8*Tr)/(3*vr - 1) - 3/vr^2, vr]
>The problem is that there are 3 Real solutions, and Mathematica is giving
>solutions with (granted a small) imaginary component.
>And hitting it with  a full simplify is just not a good idea...

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