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anonymous

  • one year ago

What are the first 5 terms of the sequence a1 - -2,an= 4an-1

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  1. freckles
    • one year ago
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    I can't read that

  2. freckles
    • one year ago
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    does - - mean = by chance?

  3. freckles
    • one year ago
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    Never seen that notation. I have only ever seen = to mean equal.

  4. anonymous
    • one year ago
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    Subtraction and Negative 2

  5. freckles
    • one year ago
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    \[a_1--2,a_n=4a_n-1\] this?

  6. freckles
    • one year ago
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    this still doesn't make any sense

  7. anonymous
    • one year ago
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    Yes

  8. freckles
    • one year ago
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    maybe you mean this: \[a_1 \color{red}{=}2 \\ a_n=4a_{\color{red}{n-1}} ?\]

  9. anonymous
    • one year ago
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    Yes but it was written in another way or form

  10. freckles
    • one year ago
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    or this: \[a_1 \color{red}{=}-2 \\ a_n=4a_{\color{red}{n-1}} ?\]

  11. freckles
    • one year ago
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    How is it written then? And how could the answer by yes if it is written in another way?

  12. freckles
    • one year ago
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    Well I guess we can just do the one I think it is as an example so maybe you can try to do the one that is on your paper. \[a_1=2 \\ a_n=4a_{n-1} \\ \text{ replace } n \text{ with } 2 \\ a_2=4a_{2-1} \\ a_2=4a_1 \\ \text{ you are given } a_1 \text{ in the first line here }\] so plug it in

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