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