4i/(9-3i)

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Solution for 4i/(9-3i) equation: 


D( i )

9-(3*i) = 0

9-(3*i) = 0

9-(3*i) = 0

9-3*i = 0

9-3*i = 0 // - 9

-3*i = -9 // : -3

i = -9/(-3)

i = 3

i in (-oo:3) U (3:+oo)

(4*i)/(9-(3*i)) = 0

(4*i)/(9-3*i) = 0

4*i = 0 // : 4

i = 0

i = 0

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