Question 222195
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The imaginary number *[tex \Large i] is defined by *[tex \Large i^2 = -1]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ i^3\ =\ i^2\cdot i\ =\ -1 \cdot i\ =\ -i]



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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