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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)
X/(X^2)-1 < 0
1*X^-1 < 1
1*X^-1 < 1 // : 1
X^-1 < 1/1
X^-1 < 1
1/(X^1) < 1
X <> 0
1/(X^1) < 1 // * X^2
(X^2)/(X^1) < 1*X^2
X^1 < 1*X^2
X-X^2 < 0
X^1*(1-X) < 0
X < 0
-(abs(X))^1*(1*(abs(X))^1+1) < 0 // : -(abs(X))^1
1*(abs(X))^1+1 > 0
1*(abs(X))^1 > -1 // : 1
(abs(X))^1 > -1/1
(abs(X))^1 > -1 // ^ 1/1
abs(X) > (-1)^(1/1)
abs(X) > -1
X in (-oo:0)
X < 0
X > 0
X^1*(1-(1*X^1)) < 0 // : X^1
1-(1*X^1) < 0
1 < 1*X^1 // : 1
1/1 < X^1 // ^ 1/1
(1/1)^(1/1) < X
X in (1:+oo)
X > 0
X in (-oo:0) U (1:+oo)
X in (-oo:0) U (1:+oo)
(-oo:0) U (1:+oo)
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