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

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

Homework Statement


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


Homework Equations


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


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!
 

Answers and Replies

  • #2
SteamKing
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Why doesn't it work? Show your calculations.
 
  • #3
arildno
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"got +/- ki for R but that doesn't seem to work."

It does work.
 

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