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Math Help - Sequences arithmetic, geometric or Reither

  1. #1
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    Sequences arithmetic, geometric or Reither

    A little work on Sequences here but I'm unsure about a couple of my questions, here they are

    1, -1, 1, -1, 1...

    I'm thinking this would be a geometric sequences with (-1) as the ratio, would I be incorrect?
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  2. #2
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    Quote Originally Posted by Folklore View Post
    A little work on Sequences here but I'm unsure about a couple of my questions, here they are

    1, -1, 1, -1, 1...

    I'm thinking this would be a geometric sequences with (-1) as the ratio, would I be incorrect?
    No, you are NOT incorrect. You are CORRECT.
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  3. #3
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    Quote Originally Posted by mr fantastic View Post
    No, you are NOT incorrect. You are CORRECT.
    thanks very much cleared that up ^^

    One more little thing, the first 5 terms of the sequence

    Xk = 9k - 7

    I have on my results here

    X1 = 9k - 7 = 2

    X2 = 9k - 7 = 11

    X3 = 9k - 7 = 20

    X4 = 9k - 7 = 29

    X5 = 9k - 7 = 38

    would this be correct ?
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