Series Flashcards
(7 cards)
1
Q
What is the binomial expansion of (a+b)n?
A
an+(n,1)an-1b+(n,2)an-2b2+…+bn
2
Q
What is the general term of the expansion of (a+b)n?
A
(n,r)an-rbr
3
Q
Un
A
a+(n-1)d
4
Q
Sn
A
(n/2)(2a+(n-1)d)
5
Q
S∞
A
a/1-r if -1<r<1
6
Q
Sn
A
(a(rn-1)/r-1
7
Q
Un
A
arn-1
