FM question to do with coefficients and rootsWatch
Hi guys,It's a question from CIE A level further maths, I can do the first part of the question and also can find S3, but I am not sure how to calculate S-2. The examiner report says that S3 = 3 and S-2 = 1 Any help would be greatly appreciated. Thanks!
...and you can work from there.
So to find if you let and then rearrange and form a polynomial equation, and look at the second term coefficient, that will be the sum , so it will be where's is coefficient of first term and b is coefficient of second term.