       Re: Solve or Reduce?

• To: mathgroup at smc.vnet.net
• Subject: [mg64378] Re: [mg64363] Solve or Reduce?
• From: Bob Hanlon <hanlonr at cox.net>
• Date: Wed, 15 Feb 2006 03:31:49 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

```C is the first arbitrary constant (highlight C and select from the menu

Help/Find Selected Function.../

Do the same for && and other unknown operators.

Your equation was somewhat garbled.  Try something like this

Needs["Graphics`"];

ImplicitPlot[(13 Cos[q]-(5+8 Cos[f]))^2+
(13 Sin[q]-(7+8 Sin[f]))^2==49,
{q,0,4Pi},{f,0,4Pi},PlotPoints->100];

Bob Hanlon

>
> From: Math Novice <math_novice_2 at yahoo.com>
To: mathgroup at smc.vnet.net
> Subject: [mg64378] [mg64363] Solve or Reduce?
>
>
> I'm looking to solve the equation
>
>   (13 Cos[q]-(5+8 Cos[f]))^2+(13 Sin[q]-(7+8 Sin[f]))^2?49
>
>   so that I can graph phi as a function of theta in the first quadrant only. A
graph of the solution obtained using the Solve command produces
unexpected results and I haven't used Mathematica much so I'm having
trouble intrepreting the results that the Reduce operation produces. I
understand that the solution is periodic but can someone interpret what the
other symbols in the solution mean, e.g., C, &&, || etc.?
>
>

```

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