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MathGroup Archive 1999

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Re: Canceling square roots with Simplify

  • To: mathgroup at smc.vnet.net
  • Subject: [mg18233] Re: [mg18211] Canceling square roots with Simplify
  • From: Haiduke Sarafian <has2 at psu.edu>
  • Date: Thu, 24 Jun 1999 14:24:16 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

At 08:41 PM 6/22/99 -0400, efarr wrote:
>Hello,
>
>Try typing in the following in a new session of Mathematica (I'm currently
>running ver 3.0 under WinNT).
>
>Simplify[ Sqrt[b^2]*Sqrt[1/b^2] ]
>
>It seems like the b's should cancel, and I should get 1. Why don't I? Is
>there any workaround?
>
>Thanks very much
>
>Everett G. Farr
> 
Try PowerExpand instead of Simplify e.g.
PowerExpand[Sqrt[b^2]*Sqart[1/b^2]]  this simplifies to 1.  Cheers





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