"Intro to Maths at Uni" 2022, STEP workshop 1

In this video, Adam and Kitty take participants through the solution to STEP question 15-S3-Q2*. Before you watch the video, you should read the question and have a go at trying to solve it. You can find the question and some hints at www.maths.cam.ac.uk/undergrad...
This was part of the 2022 "Intro to Maths at Uni" outreach programme at Cambridge
(www.maths.cam.ac.uk/undergrad.... Most of the interaction happened on the Zoom chat, with Kitty, sorry you can't see that here!
* (That's question 2 from STEP 3 in 2015, which you can download from the STEP database at stepdatabase.maths.org/)