Calculus BC => Tests for Convergence and Divergence

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29 Terms

1
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Geometric Series Test→ what type of series is it for?

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Geometric Series Test→ divergent conditions

|r| ≥ 1

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Geometric Series Test→ convergent conditions

|r| < 1 and will converge to S= a (first term) / 1-r

4
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nth term test for divergence

image → If =0, it doesn’t tell us anything; need to use another test. can only be used to prove divergence, not convergence

<p><em>image</em> → If =0, it doesn’t tell us anything; need to use another test. can only be used to prove divergence, not convergence</p>
5
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Telescoping Series Test→ conditions for convergence

If in expanded form, the terms begin to subtract out'

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When is telescoping test used?

if a series collapses to a finite sum then it converges by this test

7
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What must a function be in order to use integral test?

continuous, positive, decreasing

8
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What kind of limit do you need to set up for integral test

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9
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How to find lower bound on limit of series with integral test?

use the answer you found when doing the integral test

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How to find upper bound?

integral+lower bound

11
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P-series Test→ form?

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P-series test→ what happens for p=1

harmonic series

<p>harmonic series</p>
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P-series test→ p>1 means?

converges

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P-series test→ 0<p<1 means?

diverges

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P-series test→ p=1 means?

harmonic series

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Direct Comparison test→ when can you use it?

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Direct Comparison Test→ conditions for convergence?

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Direct Comparison Test→ conditions for divergence?

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19
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Limit Comparison Test→ what kind of function would we see when doing this test?

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Limit Comparison Test→ what should be true to conduct this test

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Limit Comparison Test→ The two series for a.sub.n and b.sub.n. should?

either both converge or both diverge

22
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Alternating series test→ what should be true about a.sub.n to use test

should be greater than 0 and decreasing

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Alternating series test→ what kind of series?

(-1)^n+1 × 1/n & (-1)^n * 1/n! => alternatively positive and negative

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Alternating series test→ converges if?

  • alternate in sign

  • decrease in magnitude

  • limit of 0

25
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what is alternate series test used for

ONLY to prove CONVERGENCE

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Alternate series test→ if that first limit with a.sub.n doesn’t equal zero?

series diverges by nth term test for divergence NOT by this testA

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Alternate series test→ a series is absolutely convergent if?

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Alternate series test→ a series is conditionally convergent if?

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29
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ratio test→

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