Mathematics, 24.05.2021 21:10 animaljamissofab
Use summation notation to write the series -1+2-4+8-16... for 12 terms
Answers: 2
![f(12) = \Sigma\limits_{i = 1}^{12} [(-1)^{n}\cdot 2^{n-1}] = -1 + 2 - 4 + 8 - 16 + 32 - 64 + 128 -256 + 512 - 1024 + 2048](/tpl/images/1344/6655/8e941.png)
is represented by the expression ![f(n) = \Sigma\limits_{i = 1}^{n} [(-1)^{n} \cdot 2^{n-1}]](/tpl/images/1344/6655/def5c.png)
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Use summation notation to write the series -1+2-4+8-16... for 12 terms...
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