Sn = [n x (2a + (n – 1) x d)] / 2 ?
I have atest fats approaching and the questions there use this formula, so i wanted to get some practise questionss that require its use but i dont know the name so i am STUCKalso, if you know where i can get some questions for it PLEASE TELL ME.
THANKYOU SO MUCH!!!!!
I have atest fats approaching and the questions there use this formula, so i wanted to get some practise questionss that require its use but i dont know the name so i am STUCKalso, if you know where i can get some questions for it PLEASE TELL ME.
THANKYOU SO MUCH!!!!!

Sn = [n x (2a + (n – 1) x d)] / 2 [lose the x, use (*) for multiplication]
measures the sum of an arithmetic series of n terms, where the first term is a and the difference is d...
The chapter/section of your book will be "sequences and series"
Study !
measures the sum of an arithmetic series of n terms, where the first term is a and the difference is d...
The chapter/section of your book will be "sequences and series"
Study !

This is the formula for the sum of an arithmetic progression.