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-(3/x) = 0
1-3*x^-1 = 0
-3*x^-1 = -1 // : -3
x^-1 = 1/3
-1 < 0
1/(x^1) = 1/3 // * x^1
1 = 1/3*x^1 // : 1/3
3 = x^1
x = 3
x = 3
| 5y^3+10y^2= | | 2x-3=-3(x+1) | | 9+7x=29+2x | | 10cos(x)-3=0 | | 7-10x/8 | | 9x+2y+7z-4x+3z-5y= | | 4x^2+1=-4x+36 | | 13-4p=2p+10 | | 5-4x=7x-9 | | 20x-3y=280 | | y=0.5x^4-1.5x^2+x-2 | | lg(x^3)+2lg(x^2)-14=0 | | 6q+4=5q+7 | | 987-b-3c=659 | | a+2b+4c=2200 | | 9k=3x+2 | | z^4=8((sqrt(3))i-1) | | 2y-12+5y+17=180 | | 36-2=25 | | 323-48.45= | | 0.9+0.8= | | x^2007+17x^2006+1=0 | | 3x+5x-7x=8-6 | | -x^2-3x+10=2x^2+10 | | 5h+j+2-3h+3= | | 3a^2-6a-1=0 | | 3z/10-2=0 | | 4a+2+3a-1= | | s^3+s^2-1=0 | | z^2+z+iz-5i=0 | | 7(3x+8)-3(2x-1)= | | 9a/10×4a/10 |