Exercise sets 1-2

Following the first two lectures, you will now have one week to work on the problems in exercise sets 1-2 before the exercise classes next week where you will have a look at some solutions. As I mentioned in class, many of the pen-and-paper problems are quite challenging, so don't be too discouraged if you are not able to fully solve a problem. Already understanding and thinking about the problem is very useful, and then also understanding the solution. Also, due to slow progress by the lecturer, we did not yet cover the lasso, which is part of ex 3.16, so you can consider that as an extra star problem.