Two messages about project 2

Hi all,
Two quick messages concerning project 2:

• We have added a couple of hints for problem 6, as this problem perhaps was a bit confusing. So make sure to check the project page.
• When lecturing the Jacobi rotation method I got one of the matrix equations wrong. The equation for updating the R matrix should be R^(m+1) = R^(m) * S_m. (I wrote it down in the opposite order, R^(m+1) = S_m R^(m).) However, the expressions I wrote down for the individual elements of R were still correct, so presumably this error hasn't caused you too much trouble when developing your code.