Re: Dividing top and bottom

• To: mathgroup at smc.vnet.net
• Subject: [mg15667] Re: Dividing top and bottom
• From: dwcp <dwcp at mail.nerc-essc.ac.uk>
• Date: Sat, 30 Jan 1999 04:28:59 -0500 (EST)
• Organization: ESSC
• References: <786uft\$29u@smc.vnet.net> <78pb5e\$cto@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```"Nicolas B.E. Sawyer" wrote:
>
> How can I divide the denominator and numerator of an expression by a
> chosen variable and stop the result from simplifying. For example, how
> do I  divide the top and bottom of b/(b-a) by b to give 1/(1-a/b).

In[1]:= y=b/(b-a)

b
Out[1]= ------
-a + b

In[2]:= [DELETED 'COS I DID IT WRONG]

In[3]:= (Numerator[y] / b) / Expand[ Denominator[y] / b ]

1
Out[3]= -----
a
1 - -
b

--
David Pearson,              Phone: +44 (0)118  9318741 ESSC,
Fax:   +44 (0)118  9316413  University of Reading,
Reading RG6 6AL,            Email: dwcp at mail.nerc-essc.ac.uk UK.

```

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