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^3 = 0
x^3 = 0
x^3 = 0
1*x^3 = 0 // : 1
x^3 = 0
x = 0
x in (-oo:0) U (0:+oo)
(28*((3*x^2)/7))/(x^3) = 0
12*x^-1 = 0 // : 12
x^-1 = 0
x naleu017Cy do O
x belongs to the empty set
| 3x*(x+15)=-108 | | (4z+5)(1+z)=0 | | -4/21y=-8/15 | | -5+25=30y+10 | | log[3](9-5x)=4 | | 3x+3y=390 | | 4x(3x-5)=0 | | 20-4/5x | | 20-4/5 | | v=lwh^2 | | x+x+5*30=3450 | | -8/5(y-25)-1/15y | | (7i+7)=(3i-58) | | (10x^4y^3+5x^3y^2-25x^2y^4)/-5x^2y | | 3(2x+7)-2(12-3x)=21 | | (1443/4)-(1443/8) | | 5(3+y)=4(y-5) | | 8k-2k=12 | | t(t-4)=21 | | 3a^2-8a-4=0 | | 1/8+5/12 | | 3/5+2/15 | | 2/5x3/10 | | 3(x-1)-(4x-7)=4(5x-1)-13 | | 4(5-3m)9=3m-9 | | .02y-.16y=.7 | | 3x-3-4x+7=20x-4-13 | | -15/50x=2 | | 2x-8x=-11+29 | | x-(x*.03)=369206 | | 576=720 | | -10x+x=27 |