Re: Another plea for help...
- To: mathgroup at smc.vnet.net
- Subject: [mg39166] Re: [mg39161] Another plea for help...
- From: "Y.A.Tesiram" <yas at pcomm.hfi.unimelb.edu.au>
- Date: Fri, 31 Jan 2003 23:37:22 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
You almost had it. Try,
Plot[r1 /.result, {r2, startval, stopval}]
Yas
On Fri, 31 Jan 2003, 1.156 wrote:
> I'd sure like to find out how to clean up a process I do a lot. Namely, get
> a solution to some set of equations and then plot the result. For example,
> I recently did
>
> result = Solve[{a == 1/(1/r2 + 1/50), 50 == 1/(1/(a + r1) + 1/r2)}, r1, a]
>
> This gives {{r1 -> (a function of r2) }}
>
> Then, I plot it by
> Plot[ (this function of r2), {r2, startvalue, stopvalue}]
>
> where I carefully type in this function. I feel sure you Mathematica pros
> don't have to do that so I have made several feeble attempts to automate
> this over the years. They fail because I still don't have a clue how Mathematica works.
>
> Here's my last attempt:
> Plot[ result /. %]
> Mathematica just hisses and prints out tons of error messages, none of which mean
> a thing to me.
>
> Surely there is a way to get this plot without having to type the Solve[] result
> into Plot[]. Any hints would be appreciated, as usual.
>
> Rob
>
>