anonymous
  • anonymous
Find the sum of the following infinite geometric series, if it exists. 1/2 + (-1/4) + 1/8 + (-1/16) +...
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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welshfella
  • welshfella
Sum to infinity = a1 /( 1 - r)
welshfella
  • welshfella
where a1 = first term and r = common ratio
anonymous
  • anonymous
so far i have r=-1/2

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welshfella
  • welshfella
thats correct
anonymous
  • anonymous
does S=1/4?
anonymous
  • anonymous
i'll put my work on a whiteboard
anonymous
  • anonymous
|dw:1436731648286:dw|
welshfella
  • welshfella
yea and 2/6 simplifies to ?
anonymous
  • anonymous
1/4
welshfella
  • welshfella
?????
anonymous
  • anonymous
sorry 1/3
welshfella
  • welshfella
yes
anonymous
  • anonymous
cool. thanks again for your help :)
welshfella
  • welshfella
yw

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