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*y^2)/(x^-5*y^-4) = 0
x = 0
x^-5*y^-4 = 0
(x^-3*y^2)/(x^-5*y^-4) = 0
(x^-3*y^2)/(x^-5*y^-4) = 0
x^2*y^6 = 0 // : y^6
x^2 = 0
x = 0
x = 0
x = 0
x^-5*y^-4 = 0
x^-5*y^-4 = 0
x^-5*y^-4 = 0 // : y^-4
x^-5 = 0
x należy do O
x in (-oo:0) U (0:+oo)
((x^-3*y^2)/(x^-5*y^-4))^-2 = 0
x^-4*y^-12 = 0 // : y^-12
x^-4 = 0
x należy do O
x belongs to the empty set
| 2=-5+6 | | 1/2×-3/4y=-3 | | 8lnx-1/5lny | | 7(5X+8)=12-(4+X) | | 2x-3=q | | 11x-17+10=180 | | f(5)=3x^2+7 | | x+(0.04x)+2=1000 | | 4x-(3x-6)=2(3x-6) | | 2x^2-6x=3x | | 6x+8+91=360 | | 5(x-2)-2(x+5)=49-4x | | -7=-x+8 | | (x^2+2x+8)(3x+27)=0 | | g(x)=-6f(g(1))+5 | | 6x+8=91 | | 6-2a=-2 | | 2x-3y+2x+2y= | | 4x+48=x+18 | | 20=-4f | | 3x-15=7x-55 | | -16s^2+20s+4=4 | | x^2+4-6=0 | | 4x-34=-12+2x | | f(g(1))=x^2-x+7 | | 5(n-8)+4=-91 | | 53=12x-7 | | 0.1*(x+2)=0.2x | | 0.2=x | | y=x4/x4-7 | | 0.2=1 | | f(x)=3x+8f(x+3) |