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Thread: [HELP!] Oriented Surface Integrals

  1. December 10th 2009, 08:48 AM #1
    violet8804
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    [HELP!] Oriented Surface Integrals

    I'm stuck with a oriented surface integrals question...
    I don't know how and where to begin...

    The question's asking to evaluate the surface integral \mathop\int\int\limits_{\hspace{-15pt}S} \vec{F}·d\vec{S} for the given vector field \vec{F} and the oriented surface S. In other words, find the flux of \vec{F} across S. For closed surfaces, use the positive (outward) orientation.

    Q29. Pg 1092 (sorry, this is just for my own reference to refer on later on)

    \vec{F}(x,y,z) = x^2\vec{i}+ y^2\vec{j}+ z^2\vec{k}, S is the boundary of the solid half-cylinder 0\le z\le \sqrt{1-y^2}, 0\le x\le 2

    How should I think of this question and where to start? Which formula to use? What are the boundaries and how did you find the boundaries?

    Please help me~
    Last edited by violet8804; December 10th 2009 at 01:28 PM. Reason: correcting the quesiton
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