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OpenStudy (anonymous):
Write the sum using summation notation, assuming the suggested pattern continues.1 - 3 + 9 - 27 + ...
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OpenStudy (ankit042):
can you identify the series?
OpenStudy (jdoe0001):
\(\Large \begin{matrix} \square?^0& \square?^1& \square?^2&\square?^3&...\\ \hline\\ 1&3&9&-27&... \end{matrix}\)
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