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Homework Help: Vibrations Proof

  1. Jan 24, 2010 #1
    1. The problem statement, all variables and given/known data
    Prove that the equation x(t)=e-ζωnt(a1edt+a2e-jωdt) is the same as x(t) = Ae-ζωntsin(ωdt+φ)


    2. Relevant equations
    Refer to the first question's answer.


    3. The attempt at a solution
    Have no idea how to start this problem. That is probably because I am low on funds and cant afford the txt. Please see if you can help and thanks in advance
     
  2. jcsd
  3. Jan 30, 2010 #2

    Päällikkö

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    Homework Helper

    Use Euler: exp(jx) = cos(x) + jsin(x).
     
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