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^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
(2000*x)/(x^2) = 0
2000*x^-1 = 0 // : 2000
x^-1 = 0
x należy do O
x belongs to the empty set
| .15x=20000 | | (2x-(7+5)-2y)= | | 6(2x-(7+5)-2y)= | | 35t-91=-9k | | -3x-9+4x=1 | | 22k-26t=-7k | | f(x)=x^2-9x+1 | | 4x+-4=11x+-46 | | -16t^2+20t+3=9 | | N+-A= | | 36x^3/10b^2= | | 1a+2b+3c+4d=30 | | (6+8i)(6+8i)=0 | | 6(2x-(7-2y+5x)+3y)= | | 12b^3/x*3x^5/10b^5x= | | X+6=0.5 | | 22x+y=16 | | 2+7r=5(r-4) | | -(7x+7)-1=-6x-(x+8) | | -2(2x+4)=8 | | (3x^2)-4x+2=0 | | 97-25/41-23=x | | 37-9/8-11=x | | 3x^3-12x^2-60x+192=0 | | X^2-147x+98=0 | | 2a^2-25a=80 | | X^2+2.5x=21 | | [3x]=5 | | y=2.3(44)-3/4 | | 2x^2-5x-2+4x^2-6x+8= | | 2x^2-5x-2+4x^2-6x+6= | | 2x^3-5x-2+4x^2-6x+6= |