4+i/(7-7i)^2

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Solution for 4+i/(7-7i)^2 equation: 


D( i )

(7-(7*i))^2 = 0

(7-(7*i))^2 = 0

(7-(7*i))^2 = 0

(7-7*i)^2 = 0

7-7*i = 0 // - 7

-7*i = -7 // : -7

i = -7/(-7)

i = 1

i in (-oo:1) U (1:+oo)

i/((7-(7*i))^2)+4 = 0

i/((7-7*i)^2)+4 = 0

i/((7-7*i)^2)+(4*(7-7*i)^2)/((7-7*i)^2) = 0

4*(7-7*i)^2+i = 0

196*i^2-391*i+196 = 0

196*i^2-391*i+196 = 0

196*i^2-391*i+196 = 0

DELTA = (-391)^2-(4*196*196)

DELTA = -783

DELTA < 0

1 = 0

1/((7-7*i)^2) = 0

1/((7-7*i)^2) = 0 // * (7-7*i)^2

1 = 0

i belongs to the empty set

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