Express the given sum in $\Sigma$ notation and find the sum. $$\frac{1}{8}-\frac{2}{9}+\frac{3}{10}-\frac{4}{11}+\frac{5}{12}$$
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Step 1
Step 1: Write the given sum in $\Sigma$ notation: The given sum can be written as: $$\sum_{k=1}^{5} \frac{(-1)^{k+1} \cdot k}{k+7}$$ Show more…
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