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Math Help - Line integral question needed for final exam

  1. #1
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    Line integral question needed for final exam

    Compute line integral SC r x dr

    where x2+y2=a2 and z=0 (Curve is circle with radius a)


    I need it for tomorrow's final exam. Thanks.
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  2. #2
    MHF Contributor Bruno J.'s Avatar
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    Is that:

    \oint_C r \ dr

    where C = \{x,y \: : \: x^2+y^2=a^2\} ?

    Is that an integral in the complex plane, with r=x+iy? An integral in \mathbb{R}^2 with r=(x,y) (which is essentially the same thing)? Or is r some other function of (x,y) such as the length?

    I'm also not sure why you say "and z=0".
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  3. #3
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    The curve is circle with radius -a- on xy plane.
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