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Thread: stumped by setting integral limits

  1. #1
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    stumped by setting integral limits

    Hi, I have a function y=(x^3/2H^3+1). I am calculating flux through an area defined by this function. So I have


    flux = limits (0, 2H) integral (function, dx).


    This is what I cannot understand - if for the same proble, I define the flux boundary as (-H, H), flux will become


    flux = limits (-H, H) integral (function, dx)


    In principle, both scenarios should result in the same result but they don't. I cannot understand what I am doing wrong.


    I will appreciate any insights.


    Thanks,
    John.
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  2. #2
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    Re: stumped by setting integral limits

    can you post the problem in it's entirety?
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  3. #3
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    Re: stumped by setting integral limits

    The equation you give defines a curve, not a region.

    "flux = limits (0, 2H) integral (function, dx)" implies you are calculating the flux of a flow given by that function across the x-axis from -H to H, not that the functions defines an area.
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    Re: stumped by setting integral limits

    thank you!
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