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Find the solution of y =-k^2*y , y(0)=1 y'(0)=0?

  1. Oct 1, 2013 #1
    Find the solution of y"=-k^2*y , y(0)=1 y'(0)=0?

    1. The problem statement, all variables and given/known data
    Find the solution of y"=-k^2*y , y(0)=1 y'(0)=0?


    2. Relevant equations
    y"=-k^2*y , y(0)=1 y'(0)=0?


    3. The attempt at a solution
    I've been stuck on this problem for a while but I can't seem to get it. I used the method of making it into a characteristic equation, but I got +/- ki for R but that doesn't seem to work. Thanks in advance for your help!
     
  2. jcsd
  3. Oct 1, 2013 #2

    SteamKing

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    Why doesn't it work? Show your calculations.
     
  4. Oct 1, 2013 #3

    arildno

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    "got +/- ki for R but that doesn't seem to work."

    It does work.
     
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