If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( d )
d = 0
d = 0
d = 0
d in (-oo:0) U (0:+oo)
3.14*6 = 3.14/d // - 3.14/d
3.14*6-(3.14/d) = 0
3.14*6-3.14*d^-1 = 0
-3.14*d^-1 = -18.84 // : -3.14
d^-1 = 6
-1 < 0
1/(d^1) = 6 // * d^1
1 = 6*d^1 // : 6
1/6 = d^1
d = 1/6
d = 1/6
| 2x+3y-x-4y= | | 7x-5+12x+7=40 | | 4s-4s= | | 5x-4x+7=2x-3x | | 7x^2+10=94 | | 13x^2-11x-2=0 | | y-3=3x+6 | | 4(2x+1)=3x+14 | | (x*x-0.8)+(0.8-x*x)=0.3 | | Ln(ln(3))=0 | | (p*p-0.8)+(0.8-p*p)=0.3 | | 8y=4xy-x | | (x+2)*(y-1)=3 | | 3xy-6x=12 | | 1+7-8=14 | | 1+7-8= | | (216)4/3 | | 180=x-50 | | 2y-6x=16 | | lx+1l=0 | | 360=4x+4x+x+x | | 95=8x+7 | | -5=x/3-8 | | 2sinx-cosx=1 | | 52=4+6t | | 3snx+2cosx=1 | | 2x+6=180-y | | 15x-200+12y=800 | | 16/5x-5/16x=462 | | 0.8*x=7 | | 1/4x-9=1/3x-16/3x | | 6-4w=-2 |