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Limits of sequences practice problems

Does the sequence converge? The first few terms, then the limit as n → ∞. 10 problems with worked solutions; in 10 of them every equation is proved by a computer algebra system.

Write the first four terms of \( \displaystyle a_n = \frac{3 n^{2} + 1}{4 n^{2} + n} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.289easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = - n + \sqrt{n^{2} + 4 n} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.290easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = - n + \sqrt{n^{2} + 2 n} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.291easy✓ Every equation proved
Write the first four terms of \( \displaystyle a_n = \frac{3 n^{2} - 3}{5 n^{2} + n} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.292easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = \frac{2 n + 4}{4 n^{2} + 1} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.293easy✓ Every equation proved
Write the first four terms of \( \displaystyle a_n = \frac{n - 3}{3 n^{2} + 1} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.294easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = \operatorname{atan}{\left(n \right)} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.295easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = \frac{5^{n}}{n!} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.296easy✓ Every equation proved
Write the first four terms of \( \displaystyle a_n = n \sin{\left(\frac{1}{n} \right)} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.297easy✓ Nihil obstat
Write the first four terms of \( \displaystyle a_n = \frac{\ln{\left(n \right)}}{n} \), and determine whether the sequence converges. If it does, find its limit.
Problem 7.298easy✓ Every equation proved