(3i-i)/(3+i) - solution

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Solution for (3i-i)/(3+i) equation:

D( i )

i+3 = 0

i+3 = 0

i+3 = 0

i+3 = 0 // - 3

i = -3

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

(3*i-i)/(i+3) = 0

(2*i)/(i+3) = 0

2*i = 0 // : 2

i = 0

i = 0

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