(-1)/x^2

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Solution for (-1)/x^2 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) = 0

-1*x^-2 = 0 // : -1

x^-2 = 0

x należy do O

x belongs to the empty set

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