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Homework Help: Integral of dx^2

  1. Apr 3, 2009 #1
    1. The problem statement, all variables and given/known data

    Integral of dx^2 =?

    3. The attempt at a solution

    I am really not sure about this one. Do I use integration by parts??

    Because I can't take the derivative of dx ?

  2. jcsd
  3. Apr 3, 2009 #2
    I think you have a notationally ill-defined problem here. Just what do you think this means?
  4. Apr 3, 2009 #3


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    Science Advisor

    Are you thinking of something like [itex]d^2y/dx^2= 1/y[/itex] so [itex]y d^2y= dx^2[/itex]?

    You can't do that! A first derivative can only be "separated" by first defining the "differentials" dx and dy separately. That cannot be done for a second derivative.
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