Question
Asked Oct 24, 2019
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Determine if the series below converges or diverges. If it converges, determine what to do.

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Expert Answer

Step 1

Leibnitz test: If the alternative series,

 

u1 - u2 + u3 – u4 + … (un > 0, for all n)

 

is such that

 

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(i) su и и (ii lim u 0 п no

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Step 2

Then the series converges.

Step 3

Now in the given series un = 3(1/4)n

 ...

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m+1 1 =0 4" lim u lim3 4 lim3 (ii) n n-

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