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Homework Help: Algebra sorting

  1. Mar 13, 2012 #1
    Hello,

    I am having some problem with some algebra:

    1 -x(t)= −Bω2 cos(ωt) −Cω2 sin(ωt)
    2 - x(t)=−ω2 x(t)

    Can someone explain how we went from 1 to 2?

    Thanks.
     
  2. jcsd
  3. Mar 13, 2012 #2

    tiny-tim

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    Science Advisor
    Homework Helper

    hello jimmy! :smile:

    i'll guess that that should read …

    0 x(t)= Bcos(ωt) + Csin(ωt)

    1 x''(t)= -Bω2cos(ωt) - Cω2sin(ωt)

    2 x''(t) = −ω2x(t) :wink:
     
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