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Math Help - Double Integrals

  1. #1
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    Double Integrals

    I have two questions that I've been having problems with, mainly finding the bounds of x and y, if anyone could help me with that part of the problem it would be greatly appreciated, thanks



    for this one, since it's an average value, do the bounds have to be numbers and not functions for both x and y?

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  2. #2
    Super Member 11rdc11's Avatar
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    Quote Originally Posted by jason0 View Post
    I have two questions that I've been having problems with, mainly finding the bounds of x and y, if anyone could help me with that part of the problem it would be greatly appreciated, thanks



    for this one, since it's an average value, do the bounds have to be numbers and not functions for both x and y?


    for the first one

    \int^{\frac{1}{4}}_{0}\int^{\sqrt{x}}_{2x} ye^x dydx
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  3. #3
    Super Member 11rdc11's Avatar
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    The formula is

    \frac{1}{area} \int\int f(x,y) dydx
    Last edited by 11rdc11; March 24th 2010 at 01:57 PM.
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  4. #4
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    Quote Originally Posted by 11rdc11 View Post
    for the first one

    \int^{\frac{1}{4}}_{0}\int^{\sqrt{x}}_{2x} ye^x dydx
    i got the second one but am still struggling with this one, can anyone help me out with the actual integration?
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