MathGroup Archive: November 2002 [00028]

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Reversing PowerExpand

To: mathgroup at smc.vnet.net
Subject: [mg37518] Reversing PowerExpand
From: "Dave Snead" <dsnead6 at charter.net>
Date: Sat, 2 Nov 2002 03:31:47 -0500 (EST)
Sender: owner-wri-mathgroup at wolfram.com

I can use PowerExpand to go from

Sqrt[x y] to Sqrt[x] Sqrt[y]

How do I reverse this and go from

Sqrt[x] Sqrt[y] to Sqrt[x y]

Thanks in advance.
--Dave Snead

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