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 = 0
((4*x^-2)/9)*y^-4 = 0
x = 0
x = 0
((4*x^-2)/9)*y^-4 = 0
((4*x^-2)/9)*y^-4 = 0
4/9*x^-2*y^-4 = 0 // : 4/9*y^-4
x^-2 = 0
x naleu017Cy do O
x in (-oo:0) U (0:+oo)
((((4*x^-2)/9)*y^-4)^-5)/2 = 0
59049/2048*x^10*y^20 = 0 // : 59049/2048*y^20
x^10 = 0
x = 0
x in { 0}
x belongs to the empty set
| 6x+-3y=9fory | | 4.05p+14.4=4.50(p+3) | | 4xy+7xy+6xy+3xy= | | 27=c-3(6-2c) | | 95=3x+5(2x-7) | | 3+19m-1=6m+107-2m | | 2x/5+6=4x/3 | | 102=-6(-5+3x) | | x+5(x-6)=6 | | -117=-3(4x+8)+8 | | 2xy+6xy+3xy= | | 156+52h=310 | | 49x^2-28x+4=4 | | 24-4y=60 | | 12(-0.75)(1/-3)+4(1/-3)/5(1/-3) | | -8/3-1/2x=4/3x-2/3(-13/4+1) | | 1r=r | | 5x+10=2x-14 | | t/4=-3.14 | | 216/3 | | 4x-3/5=2x-1/3 | | 80+82+54= | | -6(1-2n)+6n=-150 | | -2(x-4)-(1-3x)=-2(-1+x)-1-4x-2 | | 3(x+2)+(x-7)+3(x+2)+(x-7)= | | 3(-6+x)-5x=2 | | .02(3-2y)=.12y-55.14 | | 1.1(-4+10y)=-6.9+14y | | -2z-3z-6z= | | -12b+(-34b)= | | 2(x+6)+2x=5(x+1)3 | | 4y+3x=-4 |