If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
0.5*x = 0
0.5*x = 0
0.5*x = 0
0.5*x = 0 // : 0.5
x = 0
x in (-oo:0) U (0:+oo)
y = 12/(0.5*x) // - 12/(0.5*x)
y-(12/(0.5*x)) = 0
y-24*x^-1 = 0
-24*x^-1 = -y // : -24
x^-1 = y/24
-1 < 0
1/(x^1) = y/24 // * x^1
1 = x^1*(y/24) // : y/24
24*y^-1 = x^1
x = 24*y^-1
x = 24*y^-1
| (x-4)(x+5)=x-4 | | (x-4)(x+5)=x+4 | | 7+9=79 | | (x-1)(x+3)=-x+1 | | 2x-8=-4+10 | | 17-3u=14-6u | | 9m+10=32 | | 7y+3=9 | | 12/×=4/7 | | mx^2+2mx+3m-2=0 | | 5+10*x=85 | | 15*x=85 | | 3(4-5x)-2(x-4)=4 | | 4*x+45=65 | | 2x-5(8+4)=-98 | | 14x-4=10-6x+3(x+1) | | 90-x=35 | | 2x-5(8+4x)=-98 | | x(y-z)= | | 3(2x)+17-4x-X=182-7 | | 3x+4y=8in y=mx+b | | x+ln(x^2-4)=0 | | 3a+5=3+5a | | 3a-5=3-5a | | x*x*dy+y*y*dx=0 | | 3x^2-1/3y^2 | | (5-13i)(5-13i)=0 | | 2×3/8 | | 23-100*32= | | p=i^2*r | | y=2*arcsin(-1) | | y=2arcsin(-1) |