De moivre’s theorem and its applications - class-XII

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Question 1 of 38

If $iz^4 + 1 = 0$, then z can take the value

Select Your Answer:

$\displaystyle \frac{1 + i}{\sqrt 2}$

$\cos \displaystyle \frac{\pi}{8} + i \sin \frac{\pi}{8}$

$\displaystyle \frac{1}{4 i}$

$i$

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