(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

For the oscillatory solution (+k^{2}) solution, suppose x is restricted to 0[itex]\leq[/itex]x[itex]\leq[/itex]a by requiring [itex]\psi[/itex](x)=0 and [itex]\psi[/itex](a)=0, what are the restrictions on A,B and k?

2. Relevant equations

given [itex]\psi[/itex](x)=Acos(kx)+Bsin(kx)

3. The attempt at a solution

so, I pretty just plugged in the zero values to get A must be zero, leaving only [itex]\psi[/itex](a)=0=Bsin(kx), which implies that B=0 and thus k can be 0 or pi, which seems to be a completely unreasonable result, so I am confused as to where I went wrong? Thanks

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Positive oscillatory solution

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