thank you, this was very nice walkthrough. Do you have any advice on how to get better at timings? i am able to work out most of the questions buu i struggle with the time on fp1 papers, it seems there is so much to do for very little marks(especially on the last couple questions).
I think it’s like to minimise the x value since x = 2 + 2/cosh(@) we need to find the maximum value of cosh(@). Cosh(@) tends to infinity, so 2/ ♾️ =0. Therefore the smallest value of x possible is 2