Evaluate Expressions
7!=?
5040
82
64
5
∑ 4
k=1
20
S100 =1+2+3+....+98+99+100
5050
Can write a longer sum in an expression
Summation Notation
(n-1)!/n!
1/n
42 * 72
282 or 784
6
∑ 3
n=1
18
6
∑ (-1)k(1/k)
k=3
-7/60
Find the next four terms 6, 9, 12, 18,
21, 24, 27, 30
9!/2!*7!
36
∞
∑ (-1/2)n
n=0
2/3
1
∑ (4n-1)
n=-2-12
5
∑ i
i=1
15
Has a limited number of terms.
Finite Series
Find the nth term of, Cn =(3n)!/5n, find C3
24,192
6(3*8)2/5
3456/5
45
∑ (2n-5)
n=1
1845
4
∑ nn
n=1
288
What are the first four terms? an=4n+9
13, 17, 21, 25
9!/5!*4!
126
∞
∑ (-1)k (2k/3k)
k=0
3/5
10-1
∑ 1/2(1/2)k
k=0
0.9990234375
S7 =5(0.2)3 (1-(0.2)7)/1-0.2
0.049999
27, -9, 3, -1, 1/3... what is this an example of?
Infinite Sequences