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The Infinite Series xx22+x33x44++(1)n1xnn+x-\frac{x^{2}}{2}+\frac{x^{3}}{3}-\frac{x^{4}}{4}+\ldots+\frac{(-1)^{n-1} x^{n}}{n}+\ldots Does Not Converge For x=1x=-1 What Behavior Does It Exhibit? It Does Converge For x=-1

Question 23

Multiple Choice

The infinite series xx22+x33x44++(1) n1xnn+x-\frac{x^{2}}{2}+\frac{x^{3}}{3}-\frac{x^{4}}{4}+\ldots+\frac{(-1) ^{n-1} x^{n}}{n}+\ldots does not converge for x=1x=-1 .What behavior does it exhibit? It does converge for x=1x=1 .To what number does it appear to converge?


A) At -1, the series diverges to \infty , At 1, it appears to converge to ln(3) .
B) At -1 the series diverges because the terms alternate back and forth between positive and negative.At 1, it appears to converge to ln(2) .
C) At -1, the series diverges because some of the terms are undefined.At 1, it appears to converge to ln(3) .
D) At -1, the series diverges to -\infty .At 1, it appears to converge to ln(2) .

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