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arithmetic, geometric
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Sum of an arithmetic sequence
S
n
=(n/2)(a
1
+a
n
)
nth term of an arithmeic sequence
a
n
=a
1
+(n-1)d
recursive definiton of an arithmetic sequence
a
n
=a
n-1
+d
a
1
=a
1
Sum of fiest n intigers
n(n+1)
2
sum of first n perfect squares
n(n+1)(2n+1
)
6
sum of first n perfect cubes
n
2
(n+1)
2
4
nth term of a geometric sequence
a
n
=a
1
r
n-1
sum of finite geometric series
s
n
=
a
1
(1-r
n)
1-r
Sum of an infinite geometric series
S=
a
1
1-r
Author
193nicole
ID
9174
Card Set
arithmetic, geometric
Description
Geometric, arithmetc equations
Updated
2010-03-05T00:25:51Z
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