2005 Alabama ARML TST Problems/Problem 7

Revision as of 12:45, 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
Invalid username
Login to AoPS