S & P Rules Flashcards
1
Q
What does Tn stand for?
A
The n’th term
2
Q
What does Sn stand for?
A
The sum of n terms
3
Q
What does A.P.S mean?
A
a, a+d, a+d²…, a+(d⇡(n-1))
4
Q
What does G.P.S mean?
A
a, ar, ar²…, a(r⇡(n-1))
5
Q
What is the rule for A.P.S Tn?
A
a+(n-1)d
6
Q
What is the rule for A.P.S Sn?
A
((n) over (2))(2a+(n-1)d)
7
Q
What is the rule for G.P.S Tn?
A
a x (r⇡n-1)
8
Q
What is the rule for G.P.S Sn?
A
(a((r⇡n)-1)) over (r-1)
9
Q
What is a?
A
The first term
10
Q
What is n?
A
The term number
11
Q
What is d?
A
The constant difference
12
Q
What is r?
A
The constant ratio
13
Q
What is the rule for d?
A
Tn-T(n-1)
14
Q
What is the rule for r?
A
(T(n+1))over(Tn)
15
Q
What is the rule for S(infinity)?
A
(a)over(1-r)
