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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
300/x-2 > -5 // + 5
300/x-2+5 > 0
300*x^-1 > -3
300*x^-1 > -3 // : 300
x^-1 > -3/300
x^-1 > -1/100
1/(x^1) > -1/100
x <> 0
1/(x^1) > -1/100 // * x^2
(x^2)/(x^1) > -1/100*x^2
x^1 > -1/100*x^2
1/100*x^2+x > 0
x^1*(1/100*x+1) > 0
x < 0
-(abs(x))^1*(1-1/100*(abs(x))^1) > 0 // : -(abs(x))^1
1-1/100*(abs(x))^1 < 0
-1/100*(abs(x))^1 < -1 // : -1/100
(abs(x))^1 > -1/(-1/100)
(abs(x))^1 > 100 // ^ 1/1
abs(x) > 100^(1/1)
abs(x) > 100
x in (-oo:-100)
x < 0
x > 0
x^1*(1-(-1/100*x^1)) > 0 // : x^1
1-(-1/100*x^1) > 0
1 > -1/100*x^1 // : -1/100
1/(-1/100) < x^1 // ^ 1/1
(1/(-1/100))^(1/1) < x
x in (0:+oo)
x > 0
x in (-oo:-100) U (0:+oo)
x in (-oo:-100) U (0:+oo)
(-oo:-100) U (0:+oo)
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