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Derivative of the volume of a cube

  1. Oct 9, 2008 #1
    I am asked to find the second derivative of the volume of a cube with respect to the length of a side.

    would my initial f(x)=x3/x ??

    than just follow with the quotient rule to get f(2)(x)?
     
  2. jcsd
  3. Oct 9, 2008 #2

    Hootenanny

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    Why do you have f(x) = x3/x = x2? Wouldn't that just be the surface area of a single face of the cube rather than it's volume?
     
  4. Oct 10, 2008 #3

    HallsofIvy

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    What is the FORMULA for the volume of a cube? What is the derivative of that?
     
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