exercises for Thu May 5

I've uploaded yet another new version of Exerises and Lecture Notes, version H, with so far 35 exercises, dater 30 Aprill 

For Thu May 5, I use a bit of time to round off more from Ch 4, and start on Sections 6.1, 6.2, 6.3, the last part of the curriculum, with state-space models. 

Work with these exercises: Exams May 2018, no. 1; June 2016, no. 3; May 2014, no. 1. Then Nils Collection Exercises 31, 32, 33, 35.