If a = a2=2,an=an-1 for n smaller than 2 then a5 is
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Answer:
Step-by-step explanation:
Given that a
1
=2anda
2
=2
use a
n
=a
n−1
−1
Putting n=3,a
3
=a
3−1
−1
a
3
=a
2
−1=2−1=1
Putting n=4,a
4
=a
4−1
−1
a
4
=a
3
−1=1−1=0
Putting n=5,a
5
=a
5−1
−1
a
5
=a
4
−1=0−1=−1
Hence the five terms of sequence are 2,2,1,0and−1.
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