1. The problem statement, all variables and given/known data I need some help http://www.fysik.uu.se/kurser/1tt306/filer/TentKF06+short-answers.pdf On task 4 a) i don't understand why they have two solutions, one for odd n and the other for even n.
Hi there, I also study @ Uppsala ;) physics.. It has to do with the parity of the wave functions. Look on the symmetries around x=0. Ground state has zero nodes, 1st excited has one etc. Skiss the potetial and search for symmetry points.
Note there's no qualititative difference between the x and y directions. You could write the wavefunction more symmetrically as: [tex] \psi_{nm} = C \sin \left( n \pi \frac{x-(-A)}{A-(-A)} \right) \sin \left( m\pi \frac{y-0}{B-0}\right) [/tex] They just used some trig identities to rewrite this.