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# Recursive Definition

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How do I create a recursive definition using the values 80,77,74,71,68...?

I already have the value table set up:

 n=1 n=2 n=3 n=4 n=5 a1=80 a2=77 a3=74 a4=71 a5=68

Where do I go from here?

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#1
+91786
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80, 77, 74, 71, 68

They keep getting 3 smaller so how about

$$T_{n+1}=T_{n}-3\qquad where \;\;T_1=80\quad and \quad n\ge1 \quad and\;\; n\in Z$$

I am not really sure how these are supposed to be presented but that is what I would do. :)

Melody  Apr 25, 2017
#2
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Thanks a ton! This is exactly what I needed!