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Rearrangement of expression

• To: mathgroup at smc.vnet.net
• Subject: [mg91716] Rearrangement of expression
• From: "Gehricht at googlemail.com" <Gehricht at googlemail.com>
• Date: Sat, 6 Sep 2008 02:08:02 -0400 (EDT)

Hi!

Suppose I have the fraction a/Sqrt[a^2+b^2]. How can I rearrange it to
1/Sqrt[1+(b/a)^2]?
With thanks
Yours Wolfgang