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)/x+1 = 2*x-(1/x) // - 2*x-(1/x)
1/x-(2*x)+(2*x)/x+1 = 0
1/x-2*x+(2*x)/x+1 = 0
1*x^-1-2*x^1+3*x^0 = 0
(3*x^1-2*x^2+1*x^0)/(x^1) = 0 // * x^2
x^1*(3*x^1-2*x^2+1*x^0) = 0
x^1
3*x-2*x^2+1 = 0
3*x-2*x^2+1 = 0
DELTA = 3^2-(-2*1*4)
DELTA = 17
DELTA > 0
x = (17^(1/2)-3)/(-2*2) or x = (-17^(1/2)-3)/(-2*2)
x = (17^(1/2)-3)/(-4) or x = (17^(1/2)+3)/4
x in { (17^(1/2)-3)/(-4), (17^(1/2)+3)/4}
x in { (17^(1/2)-3)/(-4), (17^(1/2)+3)/4 }
| 3.25+n=12.75 | | 2x^2+12x+17=5 | | 3x-9y=-7 | | x-.20x=40 | | y-5=-4/9(18) | | 4(y+8)-7=15 | | -2d-2=3d+8 | | x-0.15=21.76 | | 5.9-b=2 | | f=(9/5)(18+32) | | 3=(6-x)/9 | | 67+t=113 | | -11.6x=81.2 | | w^2+17w-5330=0 | | 5n-3=11 | | 12+2n(2*9)=4+6n(3*6) | | x-2/8=0 | | 2(3x+4)=2x+8+4x | | -3=(6-x)/9 | | 2x^2+21x-8.1=0 | | x+10=x+15 | | 12+2n/2=4+6n/2 | | 35-r=10 | | 2x+9=8x+8-x | | 15m^2-21n+9= | | x^2-14x+49=53 | | z/17=-18 | | 9-0.25x=.75x+4 | | x/4+10=30 | | 2t+6t=40 | | 6x+30/4=2x-2 | | 3+n= |