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MathGroup Archive 2005

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Re: Related quastions. Question 2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57586] Re: [mg57499] Related quastions. Question 2
  • From: DrBob <drbob at bigfoot.com>
  • Date: Wed, 1 Jun 2005 06:04:06 -0400 (EDT)
  • References: <200505300100.VAA26812@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

Who's Bob?

Bobby

On Sun, 29 May 2005 21:00:18 -0400 (EDT), Kazimir <kazimir04 at yahoo.co.uk> wrote:

> Dear Bob,
>
> you gave the example
>
> Print["Equation to solve for x"]
> a x + b == c
> Print["Subtract b from each side"]
> # - b & /@ %%
> Print["Divide each side by a"]
> #/a & /@ %%
>
> It works but i do not like very much expressions with  %%, as I should
> not insert more lines before it or I have to modify this symbol. I
> would like to start with
>
> expr= (a x + b == c)
>
> and then make a transform like expr1 =  expr - b. It clearly does not
> work. Could you advise me a mathematical operartion over expression
> which would return a x == c - b .
>
> The best thing I found was
> expr = (a x + b == c)
> Distribute[#1 - b &@expr, Equal]
> however, it does not work in all cases that I need.
>
> Vlad
>
>
>
>



-- 
DrBob at bigfoot.com


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