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Math Help - Double Integral

  1. #1
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    Double Integral

    Could you please help me on this?

    2 2-x
    ∫ ∫ .75 x dy dx
    1 0

    The study workbook solution is 1/2 but I cannot get this result. Instead I get 1/8 and I don't know what I am doing wrong.
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  2. #2
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    Quote Originally Posted by Nikos View Post
    Could you please help me on this?

    2 2-x
    ∫ ∫ .75 x dy dx
    1 0

    The study workbook solution is 1/2 but I cannot get this result. Instead I get 1/8 and I don't know what I am doing wrong.
    1/2 is the correct answer. To know what you're doing wrong we will need to see your working.
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  3. #3
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    Thank you! I found my mistake. When I was integrating the first integral I was supposed to consider .75x as a constant, instead I was integrating it as a variable. I lost 2 hours on this stupid mistake, but I think I learned my lesson now! Thanks again!
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