Resolve a function

*To*: mathgroup at smc.vnet.net*Subject*: [mg89697] Resolve a function*From*: maria <m.massaouti at windowslive.com>*Date*: Wed, 18 Jun 2008 04:25:26 -0400 (EDT)

Dear all, I am new with mathematica. I would be grateful if someone could tell me how can I find the general solutions of the r for the following function f(r_) = 14.4* ((2/Sqrt[r^2 + R^2]) - 1/r ) (where R=constant). I just want to express the function as r =.....*f. Is this possible with mathematica. Thank you.

**Follow-Ups**:**Re: Resolve a function***From:*"Szabolcs HorvÃt" <szhorvat@gmail.com>