SOLUTION: find the sum of the infinite geometric series http://prntscr.com/sg30qg

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Question 1159031: find the sum of the infinite geometric series
http://prntscr.com/sg30qg
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

a.
sum%28+%281%2F2%29%5En%2C+n=0%2Cinfinity%29........apply series geometric test: 2
=> sum%28+%281%2F2%29%5En%2C+n=0%2Cinfinity%29=2

b.
sum%28+%28-1%2F2%29%5En%2C+n=0%2Cinfinity%29
=2%2F3
=0.666666666667