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Re: Solving an equation

  • To: mathgroup at
  • Subject: [mg51377] Re: Solving an equation
  • From: Roger Bagula <tftn at>
  • Date: Fri, 15 Oct 2004 02:47:33 -0400 (EDT)
  • References: <cklle4$eqe$>
  • Reply-to: tftn at
  • Sender: owner-wri-mathgroup at

Try using FindRoot[]
It should work if you have a starting value near the root.
It gives a  zeta zero root by this method:

Scott wrote:

>I have an equation, Gamma[a+I b] = some complex number.  I need to
>solve this equation for a and b.  I can write a+I b as z, but it can't
>be solved through NSolve.  What I have been doing is a double do loop
>for a and b and getting some number.  Then I compare this to the
>number I have.  Then I narrow down my possibilities for a and b, and
>go through the process again.  Does anyone know of a better way to do
>this problem?  Is there a way to have Mathematica compare each result
>of the do loop to a given value, and given certain conditions spit out
>an answer for a and b?
>Hope that makes sense.

Respectfully, Roger L. Bagula
tftn at, 11759Waterhill Road, Lakeside,Ca 92040-2905,tel: 619-5610814 :
alternative email: rlbtftn at

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