AdrianeA47106 AdrianeA47106

29-10-2022
Mathematics

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Write a recursive formula for each sequence.19, 7, -5, -17, ...9, = 0n= for n ≥ 2an==5, 20, 80, 320, ...for n ≥ 2

Write a recursive formula for each sequence19 7 5 17 9 0n for n 2an5 20 80 320 for n 2 class=

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HiroshiJ219500 HiroshiJ219500

29-10-2022

First sequence:

[tex]\begin{gathered} a_1=19 \\ a_n=a_1-12(n-1)=19-12n+1\Rightarrow a_n=20-12n \end{gathered}[/tex]

Second sequence:

[tex]\begin{gathered} a_1=5 \\ a_n=a_1\cdot4^{n-1}\Rightarrow a_n=5\cdot4^{n-1} \end{gathered}[/tex]

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