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Use sigma notation to represent the following series for the first 12 terms. 2 +(-8) +32 + (-128) + .

User MojoJojo
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2 Answers

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This is simply Order of Operations. The answer should be 104.
User RamKr
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\displaystyle\sum_(i = 1)^(12) 2(-4)^(i-1)
User Krishnan Sundaram
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