A note describing exercise 4 has been uploaded to Google drive. Follow the usual link to get access to it, or this shortcut: https://drive.google.com/open?id=1AJBCv88O73idjRvdwpR33fJffyfNt83_

We will go step by step through this in class, but please, have a read first such that you are aware of what we will be doing.

Cheers,

Enzo