I just finished grading Homework #2. The average was 63.25 out of 70, which is great. Pretty much everybody got pretty much everything correct.
If anything, people were too diligent; the commonest "errors" (not actually errors) seemed to be:
a) rederiving Plancherel (E[$fg$] = $\sum_S \hat{f}(S) \hat{g}(S)$) over and over; and,
b) reintroducing $D_i f$ without realizing it in later problems and rederiving the facts from Problem 1.
As mentioned in a comment, I'll be doing the solution for the bonus problem in class later.
Sunday, February 25, 2007
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