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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
6-(4/x) > 2 // - 2
6-(4/x)-2 > 0
6-4*x^-1-2 > 0
-4*x^-1 > -4
-4*x^-1 > -4 // * -1
4*x^-1 < 4
4*x^-1 < 4 // : 4
x^-1 < 4/4
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)
| 3x^2-2-8=0 | | f(6)=6-9 | | (1+i)z^2=0 | | 32=-7+8(y+6) | | 5+3x=2x+11 | | 6x-7.5=(-31.5) | | f(5)=5-9 | | 0.76+0.11t=1.85t-0.40 | | x+5+2=1 | | x^2=7+3x | | (28.3)(800.89)(30.6)=x | | f(4)=4-9 | | 7y+14=3x | | 7.8y-4.9y=2.3 | | 24=-3(p+2) | | x+5+2=2 | | 4(x-4)=5(x+4) | | 12-(4m+7)=2+4m-13 | | (4y+5)(9+y)=0 | | C-.8=-8 | | f(2)=2(2) | | 3-10+5=14+x-2 | | f(0)=2(0) | | f(-1)=2(-1) | | 4x-3(4x-17)=-29 | | f(-2)=2(-2) | | 11(z+4)-3(z-3)=4(z-1)+3(z-3) | | 62/3x | | 6x-7=3x+10 | | f(-3)=2(3) | | 8x-28=24 | | 5x+4(-33+9x)=32 |