SOLUTION: Write the geometric series -9/2 + 3/2 - 1/2 + 1/6- ... + 1/39366 in summation notation Anyone? (:

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Question 259612: Write the geometric series -9/2 + 3/2 - 1/2 + 1/6- ... + 1/39366 in summation notation
Anyone?
(:
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
google "sum of a geometric series"

the ratio (between consecutive terms) is -1/3

you can find the number of terms in the series from ___ -1/2 r^k = "last term"
___ where k is the number of terms beyond -1/2 and r is -1/3
___ k should be around 10