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What is the value of \(\sum_{i = 1}^3 (4 \times (\frac{1}{2})^{i - 1})\)

 

 Apr 20, 2020
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This is \(\sum_{i=1}^34\times(\frac{1}{2})^{i-1}=4\times 1+4\times \frac{1}{2}+4\times \frac{1}{4}\)

 

You should be able to finish from here.

 Apr 20, 2020

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