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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x < 2 // - 2
3/x-2 < 0
3*x^-1 < 2
3*x^-1 < 2 // : 3
x^-1 < 2/3
1/(x^1) < 2/3
x <> 0
1/(x^1) < 2/3 // * x^2
(x^2)/(x^1) < 2/3*x^2
x^1 < 2/3*x^2
x-2/3*x^2 < 0
x^1*(1-2/3*x) < 0
x < 0
-(abs(x))^1*(2/3*(abs(x))^1+1) < 0 // : -(abs(x))^1
2/3*(abs(x))^1+1 > 0
2/3*(abs(x))^1 > -1 // : 2/3
(abs(x))^1 > -1/2/3
(abs(x))^1 > -3/2 // ^ 1/1
abs(x) > (-3/2)^(1/1)
abs(x) > -3/2
x in (-oo:0)
x < 0
x > 0
x^1*(1-(2/3*x^1)) < 0 // : x^1
1-(2/3*x^1) < 0
1 < 2/3*x^1 // : 2/3
1/2/3 < x^1 // ^ 1/1
(1/2/3)^(1/1) < x
x in (3/2:+oo)
x > 0
x in (-oo:0) U (3/2:+oo)
x in (-oo:0) U (3/2:+oo)
(-oo:0) U (3/2:+oo)
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