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)
-2.3 = 1400/x // - 1400/x
-(1400/x)-2.3 = 0
-1400*x^-1-2.3 = 0
-1400*x^-1 = 2.3 // : -1400
x^-1 = -0.00164286
-1 < 0
1/(x^1) = -0.00164286 // * x^1
1 = -0.00164286*x^1 // : -0.00164286
-608.69459357 = x^1
x = -608.69459357
x = -608.69459357
| 87-1(x)=264 | | 3x+7=23x-5 | | 2x=3x+2-26 | | 1/87(x-1)=264 | | 3x-10=-5+22 | | 6x+60=48 | | 0=-6-5b-b^2 | | -5/6(-16/15= | | (x-11)+121+(x-11)+121=360 | | 1-8+(-9)-3-11= | | 2w^2+w=3 | | -7y+2= | | 2x+24=x+38 | | 5t+3(t-5.25)=60.25 | | (z^3+i)(z^2+iz-2-6i)=0 | | 5*8x=80 | | 4n-9=3n+2 | | 17x+4x+5x+10x=360 | | 30+5x=15x | | ^3sqrt(9y^11)/^3sqrt(125x^12) | | 5=an+bc | | R=(15-.25*(15))(.12) | | 3x+18+38=40+85 | | 14=19+5h | | 2x+12+38=40+85 | | An+bc=5 | | 5(q+3)-10= | | (2x^2)+ax+b=0 | | -20-15d=35 | | 3(y+3)-6= | | 50x^2-450=0 | | 2x+66=x+96 |