Re: Manipulation of equations and inequalities in "high-school style"

• To: mathgroup at smc.vnet.net
• Subject: [mg19531] Re: [mg19516] Manipulation of equations and inequalities in "high-school style"
• From: "David Park" <djmp at earthlink.net>
• Date: Tue, 31 Aug 1999 00:52:22 -0400
• Sender: owner-wri-mathgroup at wolfram.com

```Silvano,

There are probably a number of approaches to this. I have a high school tutorial
StepByStepEquations.nb which you can down load from my web site given below. It shows
how to do what you wish using regular Mathematica commands.

David Park

>Does anybody know a Mathematica (3 or 4) package which allows
>manipulaton of equations and inequalities like high-school students
>are supposed to do?
>
>For example
>
>2x+a = x-b      subtract a
>  2x = x-b-a    divide by 2, subtract x
>   x = -b-a
>
>or
>
> (2^x-1)^(1/2) = 5b                 log both sides
>(1/2)(x-1)log2 = log5 + logb        multiply by 2, divide by log2
>
>
>                 2(log5 + logb)     add 1
>           x-1 = --------------
>                     log2
>
>and so on.
>
>I think I saw such a notebook or package some years ago, but I am not
>able to find it any more.
>I think I am not the only teacher who would find this very useful.
>Thanks for all hints.
>
>Silvano D'Orazio
>
>
>
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```

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