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anonymous

  • one year ago

Find a recursive rule for the sequence 2, 4, 6, 10, …

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  1. myininaya
    • one year ago
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    hint: 2+4=? 4+6=?

  2. myininaya
    • one year ago
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    can you find those sums?

  3. anonymous
    • one year ago
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    the thing i dont understand is how the formula looks. im not very good at math. and ive never learned how to do recursive formulas.

  4. myininaya
    • one year ago
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    well can you find the sums mentioned above?

  5. myininaya
    • one year ago
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    2+4=? 4+6=?

  6. myininaya
    • one year ago
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    do you notice that you find a term by adding it's previous two terms for this sequence ?

  7. myininaya
    • one year ago
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    \[a_1,a_2,a_3,a_4,\cdots \\ \text{ we seen the following if you found the sums I asked you to above } \\ a_1+a_2=a_3 \\ a_2+a_3=a_4\]

  8. myininaya
    • one year ago
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    \[\text{ so say we want to find } a_n \text{ and we know the previous two terms are } \\ a_{n-1} \text{ and } a_{n-2}\] \[\text{ could you write what } a_n \text{ would be }\]

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