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)
3*y = 600/x // - 600/x
3*y-(600/x) = 0
3*y-600*x^-1 = 0
-600*x^-1 = -(3*y) // : -600
x^-1 = y/200
-1 < 0
1/(x^1) = y/200 // * x^1
1 = x^1*(y/200) // : y/200
200*y^-1 = x^1
x = 200*y^-1
x = 200*y^-1
| (y-6)-(y+6)=9y | | g(-2)=4x^2-6x-10 | | 9y+8y=102 | | 9x-2(3x-4)=-6 | | 2-12=-1 | | 3x-2x+13=13-6 | | y=7(x-6)+38 | | 13y=234 | | 8=D-12 | | 10z=180 | | 3(x-3)+x=5(7x+2)-3x | | 9x+2y=24 | | -8-5/3 | | 16-72a+81a^2=0 | | 4t+4+5t-8t=2+3 | | 2-10=8 | | (24p^5v^10)x(-4p^2v^10)= | | y=4x^2-16x-48 | | 19-2=3 | | 1z=18 | | 3n-4n=7 | | e*-5x=10 | | 10x+18x-9+5=-2x+5-9 | | lnx-2x=0 | | X+27=-7 | | x^4-2x^3-12x^2+10x+3=0 | | 1x+2y+3d+8J=12 | | y=3x^2+15-1 | | 5/x=24/4 | | 6-4z=26 | | 9(3w+6)=0 | | -360=-18x |