trig

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for the geometric series shown, state whether the series in convergent. If the series is convergent, give the sum
9 +6.3 + 4.41

  • trig -

    It is convergent and the sum is
    9(1 + 0.7 + 0.7^2 + ...) = 9/(1-0.7)= 30

  • trig -

    where'd the 0.7 come from?

  • trig -

    0.7 is the ratio of successive terms. You can verify that for yourself

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