Covers the new GCSE9-1 content on quadratic sequences. Includes an exploration at the end of why we halve the second difference to get the n2 term.




S Sawmynaden
14th Jun 2020 Flag Comment
Sir, on slide 9, sequence 3 has the answer beginning with 4n^2, I believe this should be 2n^2 as it is necessary to halve the second difference. It is not a major error, however, I thought I should inform you. Nevertheless, I find the inclusion of these slides extremely helpful as I can return to topics which I am confused about.
M Wells
4th May 2022 Flag Comment
well done on your work good grades :)