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anonymous

  • one year ago

Find the sum of the following infinite geometric series, if it exist. 1/2+(-1/4)+1/8+(-1/16)+...

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  1. sloppycanada
    • one year ago
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    By chance do you do Keystone Online? I've seen this exact questions on their site.. First step for this - How does one go about finding the ratio for this?

  2. anonymous
    • one year ago
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    the ratio is -1/2

  3. sloppycanada
    • one year ago
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    Since it is in between 1 and -1, will it converge or not? This is very important.

  4. anonymous
    • one year ago
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    I don't think so???

  5. sloppycanada
    • one year ago
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    No, since it does converge, we have a solution

  6. sloppycanada
    • one year ago
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    |dw:1435222463385:dw|

  7. anonymous
    • one year ago
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    how do I find a regular t

  8. sloppycanada
    • one year ago
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    |dw:1435222584005:dw| In this case we can use "1" for the regular t.

  9. anonymous
    • one year ago
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    so .5/1-2 = .5/-1 = -.5? @sloppycanada

  10. sloppycanada
    • one year ago
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    I got something different. |dw:1435222874711:dw|

  11. anonymous
    • one year ago
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    opps I put the wrong number for r. thank you <3

  12. anonymous
    • one year ago
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    so if I do that I get .5/1.5 right?

  13. sloppycanada
    • one year ago
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    I mean, that's one way of doing it... but I guess. If you have an iPad, there's a free app called Myscript calculator that's pretty helpful for this sorts of situations.

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