1/x^2+4=0

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Solution for 1/x^2+4=0 equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

x in (-oo:0) U (0:+oo)

1/(x^2)+4 = 0

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

x^-2 = -4

-2 < 0

1/(x^2) = -4 // * x^2

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

-1/4 = x^2

x belongs to the empty set

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