Series Tests Flashcards

memorize

1
Q

Ratio Test Converges

A

lim |a(n+1)/a(n)| < 1
x–>infinity

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2
Q

Ratio Test Diverges

A

lim|a(n+1)/a(n)| > 1
x–> infinity

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3
Q

Geometric Series Converges

A

a(n) = r^n and |r| < 1

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4
Q

Geometric Series Diverges

A

|r| > 1

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5
Q

P-series converges

A

p > 1

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6
Q

P-series diverges

A

p < 1

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7
Q

integral test converges

A

positive, decreasing, continuous

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8
Q

Alternating Series Test

A

a(n) is alternating
and |a(n)| decreases to 0

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9
Q

Nth term test converges

A

lim a(n) = 0
n –> infinity

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10
Q

Nth term test diverges

A

lim a(n) does not equal 0

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11
Q

Limit Comparision

A

Compare to geometric/p-series

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12
Q

Telescoping Series

A

partial fractions

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13
Q

Geometric Sum

A

ar^n = ar^k/1-r

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14
Q

Polar Area

A

A = 1/2 intergral [r^(theta)}^2

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15
Q

Polar Parametric

A

x = r(theta)(cos(theta)) & y=r(theta)(sin(theta))

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