- #1

Nopollution

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I need to solve the following trigonometric equation. Some time ago I would have used Fortran with the appropriate libraries but now I was wondering whether there is any better approach. Any suggestion?

w^2/c^2= k//^2 - Sqrt(w^2 Eps_b^2/c^2 - k//^2) * Tan[Sqrt(w^2 Eps_b^2/c^2 - k//^2) * d/2]

where:

c= speed of light in vacuum

k//= variable

d= parameter

w= frequency

Eps_b= parameter

I need to plot w(k//) keeping in mind that "c", "d" and "Eps_b" are just parameters.

Cheers