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A geometric sequence g starts 80, 40, ...

 Apr 24, 2019
 #1
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1.  The common difference is (1/2)

Recursive

an  =  (1/2)an-1, a1  = 80

 

2.  Here: https://www.desmos.com/calculator/dzbwv2cbw4

 

3. Recursive...tedious....find the first 99 terms....the 100th term = (1/2) * 99th term

 

 

cool cool cool

 Apr 24, 2019

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