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)
0.5/X = 5/161.25 // - 5/161.25
0.5/X-(5/161.25) = 0
0.5/X-0.03100775 = 0
0.5*X^-1 = 0.03100775 // : 0.5
X^-1 = 0.0620155
-1 < 0
1/(X^1) = 0.0620155 // * X^1
1 = 0.0620155*X^1 // : 0.0620155
16.12500101 = X^1
X = 16.12500101
X = 16.12500101
| (o.50/X)=5/161.25 | | IK=3x+19 | | IK=3x | | HJ=22+2x | | 4(3-x)+x=22+2 | | 4a^2+8a=2 | | 5/18-4x/3=11/6 | | n-40-26=-3 | | -61=61*ln(x/120) | | x-2/5=11/15 | | 3(-14)/[5(-3)-7(-2)]= | | 2x-15+x=9 | | 35=x+6 | | 8x+19=x+5 | | K/9 | | v(r)=4/33.14r^3 | | sen(3x)+sen(5x)=0 | | 4(x-5)2=64 | | (x-7)/(x^2-7x-8) | | =39y-86x | | a+8d=8 | | (x-4)/(x-6) | | 27m^2-3m=0 | | 3/2(4x-5)=5/6x-7 | | 21a^5b^4c^2-7a^2b^3+28a^3b^7=0 | | Ln(x+4)+lnx=0 | | 21(6)=7/x | | 21*6=x/7 | | -x+16=28 | | Y=1.31x-2581.6 | | -3y=-2x+24 | | 3x+219=11x-5 |