45 A level Mathematics Edexcel 2018 Paper 1 Q4

This video continues our LXL A level mathematics paper one from 2018, focusing on question four. We explore how to show that the point of intersection between a curve and a line lies within a specific range by applying the sign change rule. You'll learn to construct a new function and evaluate it at boundary values to observe a change in sign. Additionally, we demonstrate how to use a cobweb diagram to visually determine if an iterative formula converges, justifying its use in approximating the root. Visit AxiomTutoring.com for more resources and subscribe to @AxiomTutoringCourses for new videos.