Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2006
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

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

Search the Archive

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)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

C[1] 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[1], &&, || etc.?
> 
> 


  • Prev by Date: Re: How to do a SQL type operation???
  • Next by Date: Re: projection of contourplot
  • Previous by thread: Re: Solve or Reduce?
  • Next by thread: Re: Solve or Reduce?