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Re: Help with Solve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg112607] Re: Help with Solve
  • From: Eduardo Cavazos <wayo.cavazos at gmail.com>
  • Date: Thu, 23 Sep 2010 04:19:58 -0400 (EDT)
  • References: <i6a5i6$kne$1@smc.vnet.net>

Since I posted the question, I've been using Reduce alot more and for
many tasks it's been performing well. Thanks for helping me to see
(more of) the light. :-)

Ed

On Sep 9, 3:23 am, Eduardo  Cavazos <wayo.cava... at gmail.com> wrote:

> Hello!
>
> A newb question I'm sure... :-)
>
> Here's a couple of equations:
>
> eq1 = n*Sin[x] == (m*v^2)/r;
> eq2 = n*Cos[x] == m*g;
>
> The goal is to solve for 'x'.
>
> I can do this in a roundabout way via:
>
>     Solve[eq1 /. Solve[eq2, n], x]
>
> I.e. solve eq2 for 'n', substitute this into eq1, and solve the result
> for 'x'. But this approach seems too "manual".
>
> Is there a more straightforward way to carry out the problem? I tried
> this:
>
>     Solve[{eq1, eq2}, x]
>
> but it doesn't seem to work. What's a good way to go about this?
>
> Thanks!
>
> Ed



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