Unit 7 Flashcards
1
Q
Arithmetic sequences
A
A sequence that has a common difference between any pair of consecutive terms
2
Q
Common difference (Arithmetic sequences)
A
d= tn-tn-1
3
Q
General term (Arithmetic sequences)
A
tn=a+d(n-1)
4
Q
Simple intrest
A
arithmetic
5
Q
Geometric sequences
A
A sequence that has a common ratio between any pair of consecutive terms
6
Q
Common ratio (Geometric sequences)
A
r= tn/tn-1
7
Q
General term (Geometric sequences)
A
tn= aXr^n-1
8
Q
Compound intrest
A
Geometric
9
Q
Arithmetic series
A
The sum of all the terms in an arithmetic series
10
Q
Partial sum formulas (Arithmetic series)
A
sn= n/2 (2a+(n-1)d) sn= n(t1+tn)/2
11
Q
Geometric series
A
The sum of all the numbers in a geometric sequence
12
Q
Partial sum formula (Geometric series)
A
Sn= a(r^n-1)/r-1
