SOLUTION: to find the first 3 terms of the Recursively defined sequence: a1=5 , an=2a n-1 for the answer I got 5,10,20... is this correct?

Algebra.Com
Question 149448: to find the first 3 terms of the Recursively defined sequence:
a1=5 , an=2a n-1
for the answer I got 5,10,20...
is this correct?

Found 2 solutions by Fombitz, jim_thompson5910:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!




Yes, you are correct.

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!


Since , this means that...

when n=2, then




---------

when n=3, then




----------------

So the sequence is 5,10,20. So you are correct.

RELATED QUESTIONS

Find the first three terms of the recursively defined sequence. a1 = 5, a(n) =... (answered by greenestamps)
The system is defined recursively. Write the first four terms.... (answered by jim_thompson5910)
The sequence is defined recursively. Write the first four terms.... (answered by Fombitz)
A sequence is defined recursively by the given formulas. Find the first five terms of the (answered by jim_thompson5910)
the sequence is defined recursively. Write the first five terms. a1=2, a2=5; an=an-2 - (answered by ashipm01)
The sequence is defined recursively. Write the first four terms a1 = 3; an = 3an-1 + 4 (answered by robertb)
A sequence is defined recursively by the given forumlas. Find the first 5 terms. an=... (answered by ikleyn)
a1=135 and an+1=1/3 (an)for n>or=2 The sequence is defined recursively. Write the first... (answered by aaaaaaaa)
The sequence is defined recursively. Write the first four terms. {{{a[1]=2... (answered by venugopalramana)