If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
1/x-7 > 1 // - 1
1/x-7-1 > 0
1*x^-1 > 8
1*x^-1 > 8 // : 1
x^-1 > 8/1
x^-1 > 8
1/(x^1) > 8
x <> 0
1/(x^1) > 8 // * x^2
(x^2)/(x^1) > 8*x^2
x^1 > 8*x^2
x-8*x^2 > 0
x^1*(1-8*x) > 0
x < 0
-(abs(x))^1*(8*(abs(x))^1+1) > 0 // : -(abs(x))^1
8*(abs(x))^1+1 < 0
8*(abs(x))^1 < -1 // : 8
(abs(x))^1 < -1/8
(abs(x))^1 < -1/8 // ^ 1/1
abs(x) < (-1/8)^(1/1)
abs(x) < -1/8
x belongs to the empty set
x < 0
x > 0
x^1*(1-(8*x^1)) > 0 // : x^1
1-(8*x^1) > 0
1 > 8*x^1 // : 8
1/8 > x^1 // ^ 1/1
(1/8)^(1/1) > x
x in (0:1/8)
x > 0
x in (0:1/8)
x in (0:1/8)
(0:1/8)
| -8u+3(u-5)=10 | | 4a=7(a-3) | | 2(a+7)=44 | | 2u^3+5u^2-4u=0 | | 3x-18(0)=18 | | 0.23x-2.5=0.13x+2-0.8x | | 10(4x+3)=84 | | (1/9)^-(3/2)= | | 3(0)-18y=18 | | 9y-27=2y+77 | | 1/4(k-1)7 | | 32/13=192/n | | 2(0)+5y-4=-14 | | 3(x+3)=2(2x+9) | | 2x+5(0)-4=-14 | | x-12-2x=-6 | | y=(8/3)x-(16/7) | | x^4-12x^2-2=0 | | 2[4x-4(y-3)]= | | 2y-3(y+1)=(5y+3)+y | | 5t+25-16= | | 58=34 | | x^4-12x^2+2=0 | | X-3/4=-5.2 | | (2x-9)(4x^2-9x+8)= | | -.5x+2=-x+7 | | 14-2x=-18 | | 5(0)-8y=0 | | 6x^3(2x^4-x^2+3x+7)= | | fx(x)=5x^2+3x-2 | | 7x=6x-14 | | 1/2=x-6.8 |