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MathGroup Archive 1999

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Re: simplifying expressions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg20229] Re: [mg20172] simplifying expressions
  • From: "Richard I. Pelletier" <bitbucket at home.com>
  • Date: Fri, 8 Oct 1999 18:30:10 -0400
  • Organization: @Home Network
  • References: <7tgrgj$sid@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <7tgrgj$sid at smc.vnet.net>, BobHanlon at aol.com wrote:

> Rip,
> 
> See online help for Rationalize.
> 
> expr1 = 6t^2 / (4t^2 + 9t^4)^(3/2);
> 
> expr2 = 6.t^2 / (4t^2 + 9t^4)^1.5;
> 
> Rationalize[expr1 - expr2]
> 

Thanks, I hadn't seen Rationalize yet. I am glad to see that there is a
way to convince Mathematica the two expressions are equal. Or, if not
equal, at least to get beyond the real vs rational.

FYI, I had used ^.5 in one of my definitions; once I changed that to
^(1/2) the two answers were in the form.

Vale,
   Rip
-- 
Multiplication is not commutative before breakfast.

Richard I. Pelletier
NB eddress: r i p 1 [at] h o m e [dot] c o m


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