- Christmas tree problem. A surprising number of people could not translate this word problem into an arithmetic series.

- Fourier Series problem. Many people didn't make an odd function (eg integrated x from 0 to L, instead of -L/2 to L/2). For people who set up the problem correctly, a number had trouble with the integral, or did not realize cos(n*pi) alternates in sign.

- Series solution problem. Several people used an indicial equation, which is not appropriate because the ODE does not have a singnularity at x = 0.

Undergrads (ph461)

• Ethan had soft voice (especially when writing on board)
• Less writing on board, more talking, more enthusiasm/excitement
• A few more complicated examples in class would be helpful
• Waiting time for people to complete white board exercises was sometimes too long

Grads (ph561)

• Would like better alignment with EM and QM, for example, Bessel functions should be moved earlier in term.
• One person said it could have been more challenging - others said it was just right.
• Reduced row eschelon form for matrices was missing from course

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- Craig Bauling, craigb@wolfram.com, Wolfram Research, Inc., 100 Trade Center Drive, Champaign, IL 61820-7237