SOLUTION: what is the first five terms of the sequence a1=3, and an=2an-1

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Question 1076021: what is the first five terms of the sequence a1=3, and an=2an-1
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
a%5Bn%5D=2%2Aa%5Bn-1%5D
So,
a%5B2%5D=2%2Aa%5B1%5D
a%5B3%5D=2%2Aa%5B2%5D
a%5B4%5D=2%2Aa%5B3%5D
a%5B5%5D=2%2Aa%5B4%5D
a%5B6%5D=2%2Aa%5B5%5D
Once you know a term, the next term is double that term,
So,
a%5B2%5D=2%2A3=6
So then,
a%5B3%5D=2%2Aa%5B2%5D=2%2A6
Calculate that and then do the rest of them the same way.