Re: How do I assign the solution obtained by FindRoot to a variable?
- To: mathgroup at smc.vnet.net
- Subject: [mg128482] Re: How do I assign the solution obtained by FindRoot to a variable?
- From: Nan-Sheng Lin <nansheng.lin at gmail.com>
- Date: Wed, 24 Oct 2012 03:31:47 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- Delivered-to: l-mathgroup@wolfram.com
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- References: <20121023045437.AE4F2685C@smc.vnet.net>
Thank you very much for all the responses I received. I did not realize
that I only replied to the sender, and not cc-ing the group.
Anyway, all the responses have been helpful, and it is clear to me now. I
do have a follow-up question - how do I use FindRoot[] or any other
function to find ALL the roots of a non-polynomial function within a
specified range?
Thanks!
NS
On Tue, Oct 23, 2012 at 8:11 AM, Bob Hanlon <hanlonr357 at gmail.com> wrote:
> 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>
- How do I assign the solution obtained by FindRoot to a variable?