Question 41117: Find the sum of the geometric Series: 4,-2,-1/2,.....Answer should be a fraction.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Find the sum of the geometric Series: 4,-2,-1/2,.....
What you have posted is not a geometric sequence.
The ratio of -2 to 4 is -1,2
The ratio of -1/2 to -2 is +1/4
Without a consistent "r" there is no geometric sequence.
cheers,
Stan H.
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