Find the sum of the convergent series by using a well-known function. (Round your answer to four decimal places.) [infinity] (−1)n + 1 1 7nn n = 1

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Find the sum of the convergent series by using a well-known function. (Round your answer to four decimal places.) Σ_(n=1)^∞ (-1)^n+1 1/7^n n

Step-by-step explanation:

Σ_(n=1)^∞ (-1)^n+1 1/7^n n

We will use the function In (1 + x)

We will now give a power series expansion of the function while it is centered at x=0

This will give us In (1 + x) = Σ_(n=1)^∞

Note that x= 1/7

Now let us equate the two equations

Σ_(n=1)^∞ = ㏑(1 + x)| = ㏑

Sum of the series will give ㏑

answer: d. $20

step-by-step explanation:

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the distance between points l and m

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