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2005 Alabama ARML TST Problems/Problem 7

Revision as of 11:45, 11 December 2007 by 1=2 (talk | contribs)

Problem

Find the sum of the infinite series:

$3+\frac{11}4+\frac 94 + \cdots + \frac{n^2+2n+3}{2^n}+\cdots$.

Solution

This problem needs a solution. If you have a solution for it, please help us out by adding it.

See Also

2005 Alabama ARML TST (Problems)
Preceded by:
Problem 6 		Followed by:
Problem 8
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15
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