If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
2*x^2 = 0
2*x^2 = 0
2*x^2 = 0
2*x^2 = 0 // : 2
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
(10*x)/(2*x^2) = 0
5*x^-1 = 0 // : 5
x^-1 = 0
x należy do O
x belongs to the empty set
| 10x/2x^2 | | Y=4/5×-4 | | 3t+4t+7t+6=48 | | (3y+2)(7-y)=0 | | 0.16y+0.04(y+2000)=1680 | | (6+u)(2u-7)=0 | | 0.09xX=161.14 | | 3x-3x=24 | | x^2+3x^2=4x^2 | | 5/4-7/3x | | 6y+2y=7y+9 | | 3/8b=24 | | 3(x+1.83)=2x | | 0.09xX=121.10 | | -11/9x=-1/5 | | (10x-2)=55+63 | | (3x+15)=(4x-10) | | -3/10y=-6 | | 6w+5=9w+2 | | (2x+5)=33 | | 6x+5y+2x-2y= | | .16(y-6)+.02y=.08y-.7 | | 3w+4=2w+11 | | 0.6y+6.5=0.5(9+y) | | 6p=91 | | 6x+5y+2x= | | 28-2x=34 | | (6x)+(4x-3)=46 | | -4.5x+1.1=-16.9 | | 4(2x-8)-7=4(x-4)+5 | | .7x+4.2=.6x+1.4 | | 7x+6x(4)=-93 |