Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2008

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: How to solve this simple equation?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg87700] Re: [mg87659] How to solve this simple equation?
  • From: "W_Craig Carter" <ccarter at mit.edu>
  • Date: Wed, 16 Apr 2008 04:58:39 -0400 (EDT)
  • References: <200804150950.FAA24951@smc.vnet.net>

Hello Dino,
It is a good strategy to look graphically before trying a numerical solution:

Plot[{0.00324184/(2 + 2.78456 (1/y)^0.4), y}, {y, 0, .00005},
 PlotRange -> {0, .00005}]

FindRoot[0.00324184/(2 + 2.78456 (1/y)^0.4) == y, {y, .00001}]

Of course, there may be other (and complex) solutions...

Craig


On Tue,Apr 15, 2008 at 5:50 AM,  <dinodeblasio at gmail.com> wrote:
> Hello, I am quite new user of mathematica, I'd like to solve or at
>  least find an optimal solution for the following equation:
>
>  y = 0.00324184/(2 + 2.78456 (1/y)^0.4)
>
>  Thanks for your collaboration.
>  Dino
>
>



-- 
W. Craig Carter


  • Prev by Date: Coordinates of vertices
  • Next by Date: Re: smart change of variables?
  • Previous by thread: Re: How to solve this simple equation?
  • Next by thread: Re: How to solve this simple equation?