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Re: Resolve a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89703] Re: [mg89697] Resolve a function
  • From: "Szabolcs HorvÃt" <szhorvat at gmail.com>
  • Date: Wed, 18 Jun 2008 06:40:07 -0400 (EDT)
  • References: <200806180825.EAA26254@smc.vnet.net>

On Wed, Jun 18, 2008 at 11:25, maria <m.massaouti at windowslive.com> wrote:
> 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.

You should show us what you've tried so far (have you tried reading
the documentation?)

Try this:

Solve[144/10*((2/Sqrt[r^2 + R^2]) - 1/r) == f, r]


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