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Math Help - [SOLVED] cylindrical coordinates...

  1. #1
    mugsy777
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    Red face [SOLVED] cylindrical coordinates...

    I don't know why I can't figure this out. How would you write z=x^2-y^2 in cylindrical coordinates? I know that obviously if it were x^2+y^2 you would simply have z=r^2...
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by mugsy777 View Post
    I don't know why I can't figure this out. How would you write z=x^2-y^2 in cylindrical coordinates? I know that obviously if it were x^2+y^2 you would simply have z=r^2...
    recall, for cylindrical coordinates, we use (x,y,z) = (r \cos \theta , r \sin \theta, z)

    so simply replace x with r \cos \theta and y with r \sin \theta and simplify
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  3. #3
    Senior Member tukeywilliams's Avatar
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    Cylindrical Coordinates are of the following form:  (r, \theta , z)
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