       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.

```

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