If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
(8*x)^2 = 0
(8*x)^2 = 0
(8*x)^2 = 0
64*x^2 = 0 // : 64
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
((8*x)^3)/((8*x)^2) = 0
8*x = 0 // : 8
x = 0
x in { 0}
x belongs to the empty set
| 3k=6p | | -3=u+5 | | 11x+2/3(9x+12)=19x-2(x-4) | | x^2-4x+2=8 | | -7=v-2 | | 6(m-2)+14=3(m+2)-1 | | Log(x)=1000 | | Y+9=3(x-6) | | 2x^2-5x+6=x^2 | | 510=2x+2(x-7) | | x+2x-6=12+2x | | x+5=10x | | solve(11+3x)-(5-2x)= | | sin7x/cos3x | | 5x/2÷5x/2y | | 3X+1+(5X+3)=180 | | 3X+1=(5X+3) | | 3c+24=c+4 | | 72=-34+x | | 16+y=c | | 3x+8=2x-9 | | 3(x+1)-4=2(x+4) | | 2(-3y)= | | -3/x=-8 | | 98=14x | | 3x-36=4x+2 | | 3x-15=x/2 | | x^2+1=21 | | 5x-3(2(x+2))=(-5(2x-7)-3(x+8))+19 | | -5=r+1 | | Y=4x^2-16x+15 | | 25x^2-70=11 |