Sum of series (1 Viewer)

blahdeedah · Mar 5, 2016

Please help!! I know the answer, I just don't know how to get there!

InteGrand · Mar 5, 2016

blahdeedah said:
Please help!! I know the answer, I just don't know how to get there!
View attachment 32976

$\noindent It's a telescoping series (which means that if you write out the terms you'll see most of them cancel). The answer is $\frac{1}{20^2} -\frac{1}{(2-1)^2} = \frac{1}{400} -1 = -\frac{399}{400}$.$

Sum of series (1 Viewer)

blahdeedah

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InteGrand

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