sarahfleenor11
sarahfleenor11 sarahfleenor11
  • 12-05-2017
  • Mathematics
contestada

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

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LammettHash
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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