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OpenStudy (anonymous):
Hi, I just wanna know how (4pi/3) results from: 'If arg z=pi/3, then arg z^4 is". Can anyone explain why 4pi/3 is the answer?
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OpenStudy (phi):
z*z*z*z means multiply the magnitudes and add the "angle"
OpenStudy (phi):
in other words, you can write z= A e^(i*pi/3)
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