Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2011

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

Search the Archive

Re: Solving a simple equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg121853] Re: Solving a simple equation
  • From: "Oleksandr Rasputinov" <oleksandr_rasputinov at hmamail.com>
  • Date: Wed, 5 Oct 2011 04:00:02 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <j6e675$kds$1@smc.vnet.net>

On Tue, 04 Oct 2011 06:39:49 +0100, Daniel Kallfa=DF <eizdealer at web.de> 
wrote:

> Hi there, I wonder why the following equation cannot be solved:
>
> \[Kappa] = 1.4
> \[CapitalTheta] = 10;
> NSolve[Tan[\[Theta] degree] ==
>   2*Cot[\[Beta] degree]*(ma1^2*Sin[\[Beta] degree]^2 - 1)/(
>    ma1^2*(\[Kappa] + Cos[2 \[Beta] degree]) + 2), \[Beta]]
>
> It says: NSolve::nsmet: This system cannot be solved with the methods
> available to NSolve.
>
> Is there something I'm missing? My Voyage 200 solves it without any
> issues.
>
> Thanks,
> Daniel
>

1. \[Theta] is not defined (though \[CapitalTheta] = 10)
2. degree is not defined (should be Degree?)
3. ma1 is not defined

Despite this, I still get solutions in versions 5.2, 7.0.1, and 8.0.1.  
That you don't, is probably due to stray definitions for the above  
quantities.



  • Prev by Date: Re: Explicitly specifying the 3d viewing options (pan, rotate, etc.)
  • Next by Date: Thread::tdlen: Objects of unequal length
  • Previous by thread: Re: Solving a simple equation
  • Next by thread: Re: Solving a simple equation