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D( x )
x/(x^2)-1 <= 0
x^2 = 0
x/(x^2)-1 <= 0
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^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (0:1)
ln(x/(x^2)-1) = 0
ln(x/(x^2)-1) = ln(e^0)
x/(x^2)-1 = e^0
x/(x^2)-e^0-1 = 0
1*x^-1 = 2 // : 1
x^-1 = 2
-1 < 0
1/(x^1) = 2 // * x^1
1 = 2*x^1 // : 2
1/2 = x^1
x = 1/2
x = 1/2
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