Math Problem Statement

Determine whether the series is convergent or divergent.

n = 1

1

n√3

convergentdivergent

Solution

Let's analyze the given series:

n=11n3\sum_{n=1}^{\infty} \frac{1}{n\sqrt{3}}

This series is similar to a p-series, which has the general form:

n=11np\sum_{n=1}^{\infty} \frac{1}{n^p}

A p-series converges if p>1p > 1 and diverges if p1p \leq 1.

For the series given, let's rewrite it slightly:

n=11n3=n=11n1/3\sum_{n=1}^{\infty} \frac{1}{n\sqrt{3}} = \sum_{n=1}^{\infty} \frac{1}{n^{1/\sqrt{3}}}

Here, the exponent p=13p = \frac{1}{\sqrt{3}}.

Since 3\sqrt{3} is approximately 1.732, 13\frac{1}{\sqrt{3}} is approximately 0.577. This value is less than 1.

Because p1p \leq 1, the series diverges by the p-series test.

Answer: The series is divergent.

Would you like more details, or do you have any questions? Here are some related questions for further exploration:

  1. What is the p-series test, and how is it applied in different scenarios?
  2. Can you determine the convergence of a series using the comparison test?
  3. What is the harmonic series, and why does it diverge?
  4. How does the ratio test help in determining the convergence of a series?
  5. What are some examples of convergent p-series?

Tip: When dealing with series, always check if a simpler known test (like the p-series test) can be applied to quickly determine convergence or divergence.

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Math Problem Analysis

Mathematical Concepts

Series convergence
P-series test

Formulas

-

Theorems

P-series test

Suitable Grade Level

Undergraduate