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Math Help - Lengths of Plane Curves

  1. #1
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    Lengths of Plane Curves

    Find the length of the curve:
    x= (y^4)/4 + 1/(8y^2) from y=1 to y=2

    I'm having trouble finding dx/dy
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  2. #2
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    Quote Originally Posted by TAG16 View Post
    Find the length of the curve:
    x= (y^4)/4 + 1/(8y^2) from y=1 to y=2

    I'm having trouble finding dx/dy
    y = \frac{1}{4}y^4 + \frac{1}{8}y^{-2}

    \frac{dx}{dy} = y^3 - \frac{1}{4y^3}

    can you finish?
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  3. #3
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    yeah, thats actually what I had I just didn't think I was right. thanks
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