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Math Help - Who can you find the limits

  1. #1
    Junior Member
    Joined
    Apr 2006
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    Who can you find the limits

    Hello,

    I will calculate the follow surface integral but before I need to find the limits but that's the problem I had now idea.

     \left\{ \begin{array}{l} x =\varphi cos( \theta) \\ y=\varphi sin( \theta) \\ z=c \theta  \end{array} \right.

    In the first octant between two cilinders x^2+y^2=a^2 and x^2+y^2=a^2

    I think that the angle \theta must be between 0<=\theta<=\frac{\phi}{2}

    But who can I find the rest? what type of coordinates do I prefer?

    Greets. Thanks.
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  2. #2
    Junior Member
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    small mistake between two cilinders namely x^2+y^2=b^2 and x^2+y^2=a^2
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