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Re: How do I assign the solution obtained by FindRoot to a variable?

• To: mathgroup at smc.vnet.net
• Subject: [mg128479] Re: How do I assign the solution obtained by FindRoot to a variable?
• From: Bob Hanlon <hanlonr357 at gmail.com>
• Date: Wed, 24 Oct 2012 03:30:47 -0400 (EDT)
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• References: <20121023045437.AE4F2685C@smc.vnet.net>

eqn = Sin[x] + Exp[x];

z = x /.
  FindRoot[eqn, {x, 0}]

-0.588533

eqn /. x -> z

0.

eqns = {Exp[x - 2] == y, y^2 == x};

{r, s} = {x, y} /.
  FindRoot[eqns,
   {{x, 1}, {y, 1}}]

{0.019026, 0.137935}

eqns /. {x -> r, y -> s}

{True, True}


Bob Hanlon


On Tue, Oct 23, 2012 at 12:54 AM, NS Lin <nansheng.lin at gmail.com> wrote:
> I would like to store the root/solution obtained by the FindRoot[] function to a variable.  How can I do that?
>
> Thanks!
>
> NS
>

• References:
  • How do I assign the solution obtained by FindRoot to a variable?
    • From: NS Lin <nansheng.lin@gmail.com>