## 15 Reputation

8 years, 248 days

## @Carl Love   I expect this ran...

I expect this range of answers ,omega is frequency and it could be complex or imagenary .

By which numerical techniques can find the solution? could you guide me?
"DirectSearch (a third-party add-on package) " how can I install it ? does maple18 support it?

Thanks

## @acer  M[2,6] contains a function c...

M[2,6] contains a function call to BesselN. Did you mean BesselJ or BesselY or such, instead?

yes , (BesselN) i mean BesselY.

## @acer  n is the order of bessel fun...

n is the order of bessel function.

for each n , det[M]=0 have to solved for omega as function of k. .. like :   omega=f(k)

once for n=0, next for n=1 or 2.

## @tomleslie  constants: c := 3*10^8;...

constants:

c := 3*10^8;

`&omega;p` := 5*10^6;

epsilon0 := 8.85*10^(-12);

`&varepsilon;g` := 4*epsilon0;

mu0 := 1/(epsilon0*c^2);

`&mu;g` := mu0;

a := 0.5e-2;

b := 1.2*a;

Thanks

## @tomleslie    only k and omega...

only k and omega are unknowns. others are constants.

## How can i solve a nonlinear equation inc...

sorry, i forgot these:

`&varepsilon;p` := epsilon0*(1-`&omega;p`^2/omega^2);

t0 := (mu0*omega^2*epsilon0-k^2)^(1/2);

tg := (mu0*omega^2*`&varepsilon;g`-k^2)^(1/2);

tp := (mu0*omega^2*`&varepsilon;p`-k^2)^(1/2);

:)

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