Re: Complex Roots

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From	Joe Riel <joer@san.rr.com>
Newsgroups	comp.soft-sys.math.maple
Subject	Re: Complex Roots
Date	Fri, 01 Jul 2011 10:39:21 -0700
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Joel <joel.steenis@gmail.com> writes:

> I am trying to find all the complex roots of the equation T given
> below:
>
> w := 60*(2*3.14159);
> R12 := .5;
> L12 := 3/w;
> Z12 := R12+s*L12+I*w*L12;
> kp := 0.5e-3;
> kv := 0.5e-3;
> Q1 := 384;
> Q2 := 375;
>
> apw1 := s+kp*(-Q1+w*L12/abs(Z12)^2);
> apw2 := s+kp*(-Q2+w*L12/abs(Z12)^2);
> aqv1 := 1+kv*(Q1+w*L12/abs(Z12)^2);
> aqv2 := 1+kv*(Q2+w*L12/abs(Z12)^2);
> T := apw1*apw2*aqv1*aqv2;
>
>
> I have used the solve, fsolve (with complex argument), and RootOf
> function but all that is returned is one real root or nothing at all.

It only has two roots, both real.  That is apparent from the 
form of the expressions.  One way to produce both of them is

map(fsolve, {op(T)});

-- 
Joe Riel

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Complex Roots Joel <joel.steenis@gmail.com> - 2011-07-01 08:25 -0700
  Re: Complex Roots Joe Riel <joer@san.rr.com> - 2011-07-01 10:39 -0700
    Re: Complex Roots A N Niel <anniel@nym.alias.net.invalid> - 2011-07-02 06:46 -0600

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