There is an exercise in ¡­

There is an exercise in the final page of the lecture notes for 28 February. If we have time, we will solve this during the lecture. If not, the answer will appear in Fronter. (Those who have the time, should try to solve this before the lecture, but priorities are: (1) Seminar exercises, (2) Extra exercises for self-study (in Fronter), (3) Exercises in the lecture notes.)