A4lLshopezAik A4lLshopezAik

21-11-2016
Mathematics

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what is the sum of this infinite geometric series? 2+ 2/5+2/25+2/125+..... ...?

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pkmnmushy pkmnmushy

23-11-2016

We can determine is a ratio = (2/5)/2=1/5. Also we can use a formula for this:

∑ [tex] \frac{1}{5^k} = \frac{1}{1- \frac{1}{5} } [/tex]

And in that way you wil find that it is the 4 term

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