Exercise session 4

Hi everyone 

As usual, the exercise session will be today at 4:15pm (in person, like last week). 

Just in case there's confusion, we meet in Lille Fy (V232) - it's on the second floor in the west wing of the building. We won't meet in ?434 - even though that's what the schedule webpage says.

The solutions for problem set 3 have also been uploaded - there was a slight delay there, sorry about that. 

Jake