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David determines that \(3\sqrt2cis({7\pi\over4})=-3+3i\) . When he considers the graphical representation of these numbers, he knows he made an error. Clearly explain in complete sentences what David observed, and where David made his mistake. State the correct rectangular equivalence of \(3\sqrt2cis({7\pi\over4}) \) .

 
 Apr 13, 2020

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