Answer
Squeeze Theorem
Monotonic Bounded Theorem
Formal definition of limit
Work Step by Step
We can use the Squeeze Theorem by finding two sequences whose terms lie below and above the terms of the given sequence and have the same limit. Then our sequence has the same limit too.
We can also determine if our sequence is monotonic bounded. If it is, then it converges and we can determine its limit.
Another method is to find the limit using the formal definition.
