Question

How do you do this question?

Answer 1

Explanation:

ln(n) is smaller than n for all n ≥ 1.

Therefore, ln(n) / n⁴ is smaller than n / n⁴ = 1 / n³.

1 / n³ converges (p series test). Therefore, the smaller function ln(n) / n⁴ also converges.