5.4 The right comparator keeps the ratio finite · Sequences and Series, Second Half · Visual Calculus

5.4Choosing comparators

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5.4Direct comparison 5.4Limit comparison 5.4Choosing comparators 5.5Alternating partial sums 5.5Alternating series test 5.5Alternating remainder 5.5Absolute vs conditional 5.5Rearrangement 5.6Ratio test 5.6Root test 5.6When rho = 1 5.6Choosing a test 5.6Pi series race

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Home Calculus IISections 5.4-5.65.4 The right comparator keeps the ratio finite

5.4

The right comparator keeps the ratio finite

comparator

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SymPy check = 2

SymPy checks

Geometric comparison bound1

Limit-comparison ratio1

Dominant geometric comparator sum2

Alternating harmonic sum0.6931471806

Alternating p=2 sum0.8224670334

Alternating p=2 N=10 error bound0.0082644628

Absolute-series harmonic comparison limit0.3333333333

OpenStax rearranged alternating harmonic sum1.0397207708

Ratio-test rho2.7182818285

Root-test rho0.25

p-series ratio and root boundary rho1

Example 5.25a limit-comparison ratio1

Series target pi3.1415926536