see on the bottom right or sorry all across the bottom here and these are just to illustrate how one could use each of these topics in a practical setting you'll see these kind of scattered in throughout the slides no need to really take furious notes at these codeblocks like I said all of the slides are published online so especially during your labs if you want to refer back to any of the slides you can you can always do that from the online lecture notes now why do we care about activation functions the point of