4-i/2i

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Solution for 4-i/2i equation: 


i in (-oo:+oo)

4-((i/2)*i) = 0

(-1/2)*i^2+4 = 0

-1/2*i^2 = -4 // : -1/2

i^2 = 8

i^2 = 8 // ^ 1/2

abs(i) = 2*2^(1/2)

i = 2*2^(1/2) or i = -(2*2^(1/2))

i in { 2*2^(1/2), -(2*2^(1/2)) }

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