Tips for Beginners for the TI 89 Calculator

DeMoivre’s Theorem can be used to display and trace (i.e. read out) the roots of complex numbers. For example DeMoivre’s Theorem says that the cube roots of 2i = 2 ei /2 are ³ 2 ei( /2+2 k)/3, with k = 0, 1, 2. To graph these values set the Graph mode to Polar. In Y= key 2^(1/3). ................
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