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MathGroup Archive 2005

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Re: can anyone solve this equation?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58159] Re: can anyone solve this equation?
  • From: Paul Abbott <paul at physics.uwa.edu.au>
  • Date: Mon, 20 Jun 2005 05:52:22 -0400 (EDT)
  • Organization: The University of Western Australia
  • References: <d8rhj9$i7n$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <d8rhj9$i7n$1 at smc.vnet.net>,
 Chris Chiasson <chris.chiasson at gmail.com> wrote:

> Can anyone solve the following equation (for theta_4)?

Essentially, you are solving the equation

  FullSimplify[Solve[a - Cos[t] - Sqrt[R^2 - Sin[t]^2] == x, t]]

where x = 2 n rhs/d is a constant multiple of your right-hand side, rhs, 
t is theta_4, and a = R + 2/(c - 1) + 1. This is, of course, trivial. I 
expect that Solve struggles with your expression because of the length 
and/or complexity of rhs.

To me, using \[UnderBracket] makes your input expression unreadable. 
Only an engineer would work with such expressions!

Personally, I like using subscripted expressions in Mathematica. They 
are not without their difficulties and subtleties -- but are preferable 
to using \[UnderBracket].

Cheers,
Paul

-- 
Paul Abbott                                      Phone: +61 8 6488 2734
School of Physics, M013                            Fax: +61 8 6488 1014
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AUSTRALIA                               http://physics.uwa.edu.au/~paul
        http://InternationalMathematicaSymposium.org/IMS2005/


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