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Infinitely deep potential well

  1. Jun 23, 2015 #1
    1. The problem statement, all variables and given/known data

    The wave function for a particle in a infinitely deep potential well is at some point in time Φ(x) = Nx(a-x). In which probability gives the energy measurment a another value than E1 ,etc ground state

    2. Relevant equations

    1 = |cn|^2 = |<Φn|Ψ>|^2 (1)

    3. The attempt at a solution

    If Ψn(x) = sqrt(2/a)sin(n*(pi)*x/a) be the eigenfunction and put it into (1) and integrate. Is this right method im doing ?
     
  2. jcsd
  3. Jun 23, 2015 #2

    blue_leaf77

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    Homework Helper

    What are you asked to do in this problem? Initially I supposed you have to calculate the expansion coefficient, but equation (1) indicate that it's equal to unity (which is not correct either). Is it the N in ##\Phi(x)## that is asked? In that case simply use the requirement of normalization.
     
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