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Math Help - Setting up double integral

  1. #1
    s7b
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    Setting up double integral

    Hi,

    I was just wondering if the set up for this problem; integrate f(s,t)=e^slnt over the region in the first quadrant of the st-plane that lies above the curve s=lnt from t=1 to t=2

    is:

    integral(t=1 to t=2)integral(s=ln1 to s=ln2) of e^slnt

    If that's not the right set up what am I doing wrong.

    Thanks
    Last edited by Krizalid; January 29th 2009 at 04:23 PM.
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  2. #2
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    Quote Originally Posted by s7b View Post
    Hi,

    I was just wondering if the set up for this problem; integrate f(s,t)=e^slnt over the region in the first quadrant of the st-plane that lies above the curve s=lnt from t=1 to t=2

    is:

    integral(t=1 to t=2)integral(s=ln1 to s=ln2) of e^slnt

    If that's not the right set up what am I doing wrong.

    Thanks
    I think it should be

    \int_0^1 \int _0^{\ln t} e^s \ln t \, ds\,dt
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