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Very very very easy quantum exam question

  1. Jan 22, 2005 #1
    I know this is an easy question but I want to confirm that I've got this right.

    The wavefunction [tex]\psi(r)[/tex] can be expressed as a linear sum of orthonormal eigenfunctions [tex]\phi_n(r)[/tex] by

    [tex]\psi(r) = \sum a_n\phi_n(r)[/tex].

    Derive an expression for the coefficients [tex]a_n[/tex].

    I think the answer is [tex] a_n = <\phi_n|\psi>[/tex] but this seems a little too easy.

  2. jcsd
  3. Jan 22, 2005 #2
    you are correct.....
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