7i/(9-2i)

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Solution for 7i/(9-2i) equation: 


D( i )

9-(2*i) = 0

9-(2*i) = 0

9-(2*i) = 0

9-2*i = 0

9-2*i = 0 // - 9

-2*i = -9 // : -2

i = -9/(-2)

i = 9/2

i in (-oo:9/2) U (9/2:+oo)

(7*i)/(9-(2*i)) = 0

(7*i)/(9-2*i) = 0

7*i = 0 // : 7

i = 0

i = 0

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