Maikao V.

asked • 04/08/16

An=2An-1+An-2

find the next four term of the term of the sequence 
A 3
A4
A5 
A6
A8 

John M.

Before we can answer, you will need to provide the first two terms, a1 and a2.  Without them, there is no way to answer.
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04/08/16

Maikao V.

A1= 4 and A2 =1
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04/08/16

2 Answers By Expert Tutors

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Mark M. answered • 04/08/16

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a1 = 4
a2 = 1
a3 = 2a2 + a1 = 8 + 1 = 9
a4 = 2a3 + a2 = 18 + 1 = 19
a5 = 2a4 + a3 = 38 + 9 = 47
 
Follow the pattern to determine the remaining terms.
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Alan G.

Actually,
 
a4 = 2a3 + a2 = 2(9) + 1 = 18 + 1 = 19
a5 = 2(19) + 9 = 38 + 9 = 47
 
I hope this helps everyone.
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04/08/16

Mark M.

Alan G.
Thank you for catching my arithmetic error. I shall edit my reponse.
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04/08/16

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