T-LEVEL in construction - Differentiation basics - Part 2

Did you watch the first part? https://youtu.be/BH2uZ3w0ygM The basics that you need to know about differentiation for the core exam, paper 2, T-Level in design, surveying and planning for construction. If you want to continue studying the topic, here you have a video on optimisation, which is a type of differentiation: https://youtu.be/XubQEPnjiOA