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Integral of (dx)^2

  1. Mar 8, 2014 #1
    Hello, does anyone knows the Integral of (dx)^2

    Excuse my english, I hope I had make myself clear, thanks
  2. jcsd
  3. Mar 8, 2014 #2
    I'm thinking you need to be more specific. What is the context here?
  4. Mar 8, 2014 #3
    In fact i am trying to resolve a a diferencial equation d2y/(dx)^2+y=0
    I donĀ“t know how to demostrate that a possibly answer is KCos(x-x0)
  5. Mar 8, 2014 #4

    D H

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    Differentiate that possible answer twice with respect to x. What to you get?
  6. Mar 8, 2014 #5
    I know that KCos(x-x0) is a solution of d2y/(dx)^2+y=0 but I don t know how to demostrate it!
  7. Mar 8, 2014 #6


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  8. Mar 8, 2014 #7
    Thank You. Locked.
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