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Math Help - Finding arc length along the curve

  1. #1
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    Calcuting arc length along the curve

    Calculate the arc length along the curve x = y^4/4 + 1/8y^2 from y = 1 to y =2
    Last edited by victorxz90044; May 4th 2010 at 08:29 AM.
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  2. #2
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    You have x as a function of y instead of the other way, which might get a little confusing.

    The formula for arc length is:

    s=\int\sqrt{1+f'(y)^2}\ dy

    You just have to get the derivative, plug in, and do the integration. The limits are just y=1 to 2. It should be pretty straightforward.

    Post again in this thread if you hit a roadblock.

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