[email protected] is a series of questions that we, as tutors feel that are useful in helping students think and improve their understanding.

Thinking [email protected] is curated by KS. More of him can be found here


This is a standard summation question. I’m interested in the last part only.

Summation Question

The answer to (ii) is written there by the student. I’ll only do the solution to (iv).

Leave a Reply