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MathGroup Archive 2005

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Simplfying inside Sqrt

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55106] Simplfying inside Sqrt
  • From: billkavanagh at gmail.com
  • Date: Sat, 12 Mar 2005 02:36:58 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi

I'm wondering how to tell mathematica that I want terms like
Sqrt[x^2+x^4] to be x*Sqrt[1+x^2].   I have an expression with a few
terms like this in it so manually inserting a
PowerExpand[Sqrt[Expand[x^2+x^4]] is no good to me.

I've tried a general PowerExpand and Simplify with a Im[x]==0 around
the whole expression but with no luck.

Does anybody know how to do this?

Thanks,
Bill

--
William R. Kavanagh
http://www.physics.mun.ca/~wkavanag


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