Re: (a/b)^2 when a/b is replaced by e won't yield e^2

• To: mathgroup at smc.vnet.net
• Subject: [mg61524] Re: (a/b)^2 when a/b is replaced by e won't yield e^2
• From: "Richard J. Fateman" <fateman at eecs.berkeley.edu>
• Date: Fri, 21 Oct 2005 00:38:07 -0400 (EDT)
• Organization: UC Berkeley
• References: <dinvoj\$s6i\$1@smc.vnet.net><200510150223.WAA17341@smc.vnet.net> <diskhc\$m7i\$1@smc.vnet.net> <200510180644.CAA11192@smc.vnet.net> <dj4on1\$gkn\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```What a bunch of literal-minded answers. Hacking on
syntax or un-simplified forms is not going to get
you anywhere but solving this one problem.
You might as well tell Mike that the solution is the
function  foo[q_]:=e^2;

then  foo[(a/b)^2]  becomes e^2.

Here's a solution more in the spirit of solving the
problem, which is to find occurrence of a/b mathematically.

Try
Last[PolynomialReduce[(a/b)^2, {e - a/b}, {a}]]

RJF

Andrzej Kozlowski wrote:
> On 18 Oct 2005, at 15:44, mike_in_england2000 at yahoo.co.uk wrote:
>
>
>>>HoldForm[(a/b)^2] /. (a/b) -> e
>>>
>>
>>
>

```

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