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Solve...


Dear mathgroup,

I have been trying to solve the following equation using Solve,
When I type in the following line I get a message saying that an illegal
operation has been performed.

f[w_]: = 1./(w^2)  + (.9/30.)/(w - 2. Sqrt[200./10.]k)^2   - 1.-
(3./30.)/( Sqrt[200./10.]k^2 )

Solve[f[w]==0., w]

Can anyone tell me what I am doing wrong. My aim is to generate a set a
roots,w , which is a function of k.

Thanking you in advance
Aneshkumar Sooklal
Research Assistant
Dept. of Physics
University of Durban-Westville
South Africa

Tel: (031) 204 4991
email: anesh at fermi.udw.ac.za

Physics Homepage: http://fermi.udw.ac.za
Plasma Physics Homepage:  http://plasma.udw.ac.za





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