MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

Simplifying with positive constants

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26062] Simplifying with positive constants
  • From: djago at my-deja.com
  • Date: Wed, 22 Nov 2000 01:55:51 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

I'm trying to calculate some results and when I evaluate them I get:
1/2(r*a-a*d-Sqrt[4*r*a^2*d+(-r*a+a*d)^2]

I know that this is a complicated way of saying:
r*a

but Mathematica (3.0) doesn't seems to get the idea...

I've tried with FullSimplify and so on... but Mathematica won't let a
go out of the Sqrt function. Maybe If I could tell Mathematica that a,
r and d are real and positive values...

Can somebody give me a hint of how to do this???

Thx!


Sent via Deja.com http://www.deja.com/
Before you buy.


  • Prev by Date: conformal transform?
  • Next by Date: Re: vertical lines
  • Previous by thread: conformal transform?
  • Next by thread: Re: Simplifying with positive constants