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Calc 2 Series Tests
Results of Convergence/Divergence Tests of Series
10
Mathematics
Undergraduate 2
07/21/2009

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Term
Test for Divergence
Definition
IF lim n->oo An does not exist or != 0, series An is divergent
Term
Integral Test
Definition
IF continuous, positive, decreasing on [1,oo), IF f(x) converges so does series An, if not ""
Term
Comparison Test
Definition
IF series An and Bn are positive, if Bn is convergent and > An, An is convergent. If Bn is divergent and Bn < An, An is divergent.
Term
Limit Comparison
Definition
Series An and Bn positive, if lim n->oo An / Bn = C where C is finite and > 0, both converge or diverge
Term
Alternating Series
Definition
If decreasing and lim n->oo Bn = 0, converges.
Term
Ratio Test
Definition
If lim n->oo An+1/An = L, L < 1 Series An is abs. convergent. L > 1 || L = oo series is divergent. L = 1 inconclusive.
Term
Root Test
Definition
IF lim n->oo (An)^1/n = L, L < 1 Series An is abs. convergent. L > 1 || L = oo series is divergent. L = 1 inconclusive.
Term
Geometric Series
Definition
ar^n-1

convergent if |r|<1, sum = a/1-r
divergent if |r|>=1
Term
Harmonic
Definition
1/n always diverges
Term
P-Series
Definition
1/n^p convergent if p>1 else divergent
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