sequences and series Flashcards
1
Q
arithmetic n
A
a+(n-1)d
2
Q
sum of arithmetic
A
n/2(2a+(n-1)d) and n/2(a+l)
3
Q
geometric n
A
ar^n-1
4
Q
geometric sum
A
a(1-r^n)/1-r
5
Q
geometric sum to infinity
A
a/1-r
