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
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2*x-(((1/2)*x^-3)/2) = 0
2*x+(-1/4)*x^-3 = 0
2*x-1/4*x^-3 = 0
x*(2-1/4*x^-4) = 0
-1/4*x^-4 = -2 // : -1/4
x^-4 = 8
-4 < 0
1/(x^4) = 8 // * x^4
1 = 8*x^4 // : 8
1/8 = x^4
x^4 = 1/8 // ^ 1/4
abs(x) = (1/8)^(1/4)
x = (1/8)^(1/4) or x = -(1/8)^(1/4)
x = 0
x = 0
x in { 0}
x in { (1/8)^(1/4), -(1/8)^(1/4) }
| Z+(3-I)=6+21 | | x^2=-7/8x | | 9(x-7)=7x | | -6.1(4y+6)-2.8(2y-4)= | | (3x+2)(3x+2)=(x+2)(x-3) | | 6x+3=3x+36 | | Y=-3x+k | | (x-1)/(6)=(3x-3)/(4) | | 2222222x+1.3y=.5 | | 3(36)-y=18 | | 6(2T-3)=30 | | 100[0.04(n+3)]= | | 3(90+-1y)-y=18 | | 40-8k=-24k-24 | | 1/3n-11/25=3/10 | | 5-6*y=-11+2*y | | 6u+3u= | | 3(4-5x)=2(4x+3) | | 5-6xy=-11+2xy | | 5u+10=95 | | 0.01x-10x-7500= | | 0.01x-10x-750=0 | | 23=3y-13 | | 6x+9=73-2 | | (5y+2)(y-3)=-13(2+y) | | h=-16t^2+128t+8 | | x=-1-3(1) | | 8(-1-3y)+3y=-29 | | x^2-22.5x=88 | | 79+0.1x=59+0.25x | | 7x-5=4x-74 | | 4y+3=y+18 |