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Math Help - Trapezoidal rule problem

  1. #1
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    Trapezoidal rule problem

    http://i33.tinypic.com/2i3e9u.jpg

    details of my question are in there ^

    Thanks in advance
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  2. #2
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    Quote Originally Posted by janedoe View Post
    http://i33.tinypic.com/2i3e9u.jpg

    details of my question are in there ^

    Thanks in advance

    I cannot read the integral in your image, but this is my guess. Is this it:

     \int_5^7 \sqrt{4+u^5} \, du
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  3. #3
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    yes....sorry, i know its small, i think you have to click it once to zoom, if you have the option.
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  4. #4
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    Hello janedoe
    Quote Originally Posted by janedoe View Post
    http://i33.tinypic.com/2i3e9u.jpg

    details of my question are in there ^

    Thanks in advance
    If the question is indeed \int_5^7\sqrt{4+u^5}du, then I agree with your answer: 179.567. I think we have some crossed wires somewhere.

    Grandad
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  5. #5
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    Quote Originally Posted by Grandad View Post
    I think we have some crossed wires somewhere.
    Well, it wouldn't be the first time! But thanks for reassuring me of my sanity. I'll have to let my teacher know about this mistake.

    For the record, is that integral easily solved to get the exact answer, or isnt it an elementary function?
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  6. #6
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    Hello janedoe
    Quote Originally Posted by janedoe View Post
    For the record, is that integral easily solved to get the exact answer, or isnt it an elementary function?
    I can't see any straightforward way of solving it.

    Grandad
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  7. #7
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    Ok, me either, thanks!
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