If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
9*x^2*y^4 = 0
9*x^2*y^4 = 0
9*x^2*y^4 = 0
9*x^2*y^4 = 0 // : 9*y^4
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
((4*z^6)/(9*x^2*y^4))^2 = 0
16/81*x^-4*y^-8*z^12 = 0 // : 16/81*y^-8*z^12
x^-4 = 0
x naleu017Cy do O
x belongs to the empty set
| 5x^4-2x^2-3=0 | | ((16x^3y^4z^6)/(3665y^8z))^2 | | (6a+12)/6 | | z/9=-16 | | 3+2p-2=9p+4-6p | | 5x/3+1/4=0 | | -9=-9(2z-3) | | x-.14=60000 | | 7x/1+1/3 | | (r+2)/r=(3r-6)/r+(2/(5r)) | | (r+2)/r=(3r-6)/r+2/(5r) | | r+2/r=3r-6/r+2/5r | | (X+A)/B=C | | (4x+1/4)-(2x+3/3)=7/12 | | .5(2n+6)=.2(8n-10) | | 9b=0 | | (4d+3)/8=-2 | | 1/x+2+6/x-2=0 | | 0.7+4=1.34 | | 14.2=0.4(20n-7b) | | -34=-b+16-6b | | (X/-4+5)=1 | | 27x^3-64y^3= | | (1/x+2)+(6/x-2)=0 | | -q+p=12 | | 2x+0=18 | | U(2u-3s)= | | 1/x+2+1/x-2=0 | | 9x-x=4-4 | | (8t^2-24t+10)/4 | | (1/x+2)+(6/x-2) | | ((12-2)x4)/((1+4)x2) |