Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Question about cylindrical (ie. 3d polar) coordinate system.

  1. Jun 30, 2008 #1
    Question Details:

    Convert the following equation into cylindrical coordinates...
    x^2 + y^2 + z^2 = 4

    It's obvious that r^2 = x^2+y^2... but that would only simplify the equation to:
    r^2 + z^2 = 4 ... is there a better way to do this?
  2. jcsd
  3. Jun 30, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    That's all you need to do. Your result is in cylindrical coordinates.
  4. Jun 30, 2008 #3


    User Avatar
    Science Advisor

    A better way to do what? The problem you stated was "convert the equation to cylindrical coordinates" and you did that. If you are concerned that it in not "simplified" enough, the problem did NOT say "simplify" it!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook