Question

Asked Apr 26, 2019

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Determine whether the series is convergent or divergent and state what test is being used.

[summation sign from n=0 to infinity] (-1)^{n}cos(n)/n^{2}

Step 1

*Given:*

The series is

Step 2

*Known fact:*

Step 3

*Calculation:*

Let us check the convergence as follows.

Since removing or adding a term in a series does not ...

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