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MathGroup Archive 2005

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Re: transpose

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55676] Re: [mg55673] transpose
  • From: DrBob <drbob at bigfoot.com>
  • Date: Sun, 3 Apr 2005 05:50:46 -0400 (EDT)
  • References: <200504020628.BAA10769@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

For instance:

(inputs)
step1 = Solve[i == e/r, r]
step2 = First@step1
step3 = r /. step2

(outputs)
{{r -> e/i}}
{r -> e/i}
e/i

or

e /. Solve[i == e/r, e][[1]]

i r

(There are many other equivalent methods.)

Bobby

On Sat, 2 Apr 2005 01:28:03 -0500 (EST), Paul <p3aul1 at cox.net> wrote:

> I am a newbie with a simple question.
>
> I have an equation: i = e/r I want to solve the equation for r or e(it
> doesn't matter which), symbolicaly. I know this is a difficult equation
> ;), but by starting simply I can figure out others.
> Thanks,
> Paul
>
>
>
>



-- 
DrBob at bigfoot.com


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