An = [3^(n+2)]/(5^n)
=
[3^(n+2)]/[(3*5/3)^n]
=
[3^(n+2)]/[(3^n)*(5/3)^n]
=
(3^2)/[(5/3)^n]
= (5/3)^n
As
5/3 is greater than 1, as value of n increases,
the value
of (5/3)^n also increases,
and value of 9/(5/3)^n
decreases.
Therefore, sequences An
converges.
To find value of limit of
An:
When n approaches
infinity:
Value of limit (5/3)^n becomes
infinity
and value of limit 9/(5/3)^n
becomes:
9/(infinity) =
0
Answer:
Limit An =
[3^(n+2)]/(5^n) as n approaches infinity is 0
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