sarahfleenor11 sarahfleenor11

12-05-2017
Mathematics

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Express the series using sigma notation. 2 - 6 + 18 – 54 + 162 ...

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LammettHash LammettHash

12-05-2017

[tex]2-6+18-54+162+\cdots=2(-3)^0+2(-3)^1+2(-3)^2+2(-3)^3+2(-3)^4+\cdots[/tex]
[tex]=\displaystyle2\sum_{n=0}^\infty(-3)^n[/tex]

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