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elisabette

  • 2 years ago

Write the recursive formula for the geometric sequence. a1 = -2 a2 = 8 a3 = -32 A. an = -4 + an-1 B. an = -2 + an-1 C. an = -2 • an-1 D. an = -4 • an-1

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  1. terenzreignz
    • 2 years ago
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    If you're still there... think about it :) What did you multiply to -2 so that you get 8? What did you multiply to 8 so that you get -32?

  2. elisabette
    • 2 years ago
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    -4?

  3. terenzreignz
    • 2 years ago
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    That's right :) Every term is the previous term multiplied by -4. Does that answer the question?

  4. elisabette
    • 2 years ago
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    thank you so much. i gave you a medal.

  5. terenzreignz
    • 2 years ago
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    No problem :) You got it yourself, you just needed a little nudge ;)

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