## What is the alternating series estimation theorem?

The alternating series estimation theorem gives us a way to approximate the sum of an alternating series with a remainder or error that we can calculate. To use this theorem, our series must follow two rules: The series must be decreasing, b n ≥ b n + 1 b_n\geq b_{n+1} bn​≥bn+1​

## What does the alternating series test say?

The alternating series test can only tell you that an alternating series itself converges. The test says nothing about the positive-term series. In other words, the test cannot tell you whether a series is absolutely convergent or conditionally convergent.

What is a alternating series in calculus?

An alternating series is any series, ∑an ∑ a n , for which the series terms can be written in one of the following two forms. an=(−1)nbnbn≥0an=(−1)n+1bnbn≥0. There are many other ways to deal with the alternating sign, but they can all be written as one of the two forms above.

### How do you calculate error in series?

00001 value is called the remainder, or error, of the series, and it tells you how close your estimate is to the real sum. Estimate the total sum by calculating a partial sum for the series. Use the comparison test to say whether the series converges or diverges. Use the integral test to solve for the remainder.

### Can you use nth term test on alternating series?

does not pass the first condition of the Alternating Series Test, then you can use the nth term test for divergence to conclude that the series actually diverges. Since the first hypothesis is not satisfied, the alternating series test does not apply.

Is the series 1 √ n convergent or divergent?

The series diverges. ∞∑n=11n is the harmonic series and it diverges. Therefore, by comparison test, ∞∑n=11√n diverges.

#### How do you test a series of convergence?

If you see that the terms an do not go to zero, you know the series diverges by the Divergence Test. If a series is a p-series, with terms 1np, we know it converges if p>1 and diverges otherwise. If a series is a geometric series, with terms arn, we know it converges if |r|<1 and diverges otherwise.

#### When does the alternating series theorem not fail?

Analogue of alternating series theorem if magnitude of terms approaches a positive number: The alternating series theorem fails if the magnitude of terms does not approach zero.

Which is true of the alternating series test?

The even terms S2k are increasing and bounded above. lim n → ∞ bn = 0. This is known as the alternating series test. We remark that this theorem is true more generally as long as there exists some integer N such that 0 ≤ bn + 1 ≤ bn for all n ≥ N.

## How to estimate the sum of an alternating series?

The alternating series estimation theorem gives us a way to approximate the sum of an alternating series with a remainder or error that we can calculate. Looking at these results, we can see that b n ≥ b n + 1 {b_n}\\geq b_ {n+1} b ​ n ​ ​ ≥ b ​ n + 1 ​ ​, so b n b_n b ​ n ​ ​ is decreasing.

## Which is the proof for the alternating harmonic series?

The even terms S2k are increasing and bounded above. More generally, any alternating series of form (3) (Equation 9.5.3) or (4) (Equation 9.5.4) converges as long as b1 ≥ b2 ≥ b3 ≥ ⋯ and bn → 0 (Figure 2). The proof is similar to the proof for the alternating harmonic series.

What is the alternating series estimation theorem? The alternating series estimation theorem gives us a way to approximate the sum of an alternating series with a remainder or error that we can calculate. To use this theorem, our series must follow two rules: The series must be decreasing, b n ≥ b n + 1…