Re: FindRoot with a vector of unknowns

• To: mathgroup at smc.vnet.net
• Subject: [mg125055] Re: FindRoot with a vector of unknowns
• From: Bob Hanlon <hanlonr357 at gmail.com>
• Date: Mon, 20 Feb 2012 02:45:20 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201202191128.GAA15560@smc.vnet.net>

```Solve[#, x][[1]] & /@ Thread[x - {1, 2, 3} == {0, 0, 0}]

{{x -> 1}, {x -> 2}, {x -> 3}}

(Reduce[#, x] // ToRules) & /@ Thread[x - {1, 2, 3} == {0, 0, 0}]

{{x -> 1}, {x -> 2}, {x -> 3}}

FindRoot[#, {x, 1}] & /@ Thread[x - {1, 2, 3} == {0, 0, 0}]

{{x -> 1.}, {x -> 2.}, {x -> 3.}}

Bob Hanlon

On Sun, Feb 19, 2012 at 6:28 AM, Sam Takoy <sam.takoy at yahoo.com> wrote:
> Hi,
>
> Is there an elegant way to implement what I am trying to do here, that
> is solve for a vector of unknowns:
>
> FindRoot[x - {1, 2, 3} == {0, 0, 0}, {x, {1, 1, 1}}]
>
> I can do this writing a loop, but hoping for a "vectorized" solution.
>
> Thanks,
>
> Sam
>

```

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