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Re: Solve or Reduce?

  • To: mathgroup at
  • Subject: [mg64398] Re: Solve or Reduce?
  • From: Renan <renan.birck at>
  • Date: Wed, 15 Feb 2006 03:32:23 -0500 (EST)
  • References: <dsrtsn$592$>
  • Sender: owner-wri-mathgroup at

Math Novice, in comp.soft-sys.math.mathematica:
> 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.?

C[1], C[2], ... C[n] = arbitrary constant
&& = "And" operator (e.g. True && False == False, True && True == True)
|| = "Or" operator (e.g. False || True == True, False || False == True)

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