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यदि $x + \frac{1}{x} = 2\cos \theta$ है,तो $x$ का मान क्या होगा?

दी गई सम्मिश्र संख्या को $a+ib$ के रूप में व्यक्त कीजिए:
$3(7+i7)+i(7+i7)$

यदि $i = \sqrt{-1}$ है,तो $1 + i^2 + i^3 - i^6 + i^8$ का मान ज्ञात कीजिए।

$\left(\frac{1-i}{1+i}\right)^{2022}+\left(\frac{1+i}{1-i}\right)^{2021}=$

यदि $u+iv = \frac{3i}{x+iy+2}$ है,तो $y=$

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