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)
5/8 = (1/2)/x // - (1/2)/x
5/8-((1/2)/x) = 0
(-1/2)*x^-1+5/8 = 0
-1/2*x^-1 = -5/8 // : -1/2
x^-1 = 5/4
-1 < 0
1/(x^1) = 5/4 // * x^1
1 = 5/4*x^1 // : 5/4
4/5 = x^1
x = 4/5
x = 4/5
| -7=p/-s-1 | | 3x+4.2=158.7 | | 14-2(4t+3)=0 | | b=.6667(34) | | -8+a=3(a-8) | | 1212.22-1.39y+y=940 | | 6p=72 | | -3(4m+3)+4(6m+1)=42 | | x^2-6x+9-18=0 | | 3x-4y=-83 | | 2x-45=4 | | 100.48=(1/3)(3.14)(r)(6) | | 13+14x=30 | | -2m+-2=10 | | 2ac+ad+6bc+3bd=0 | | -2(3y-3)=3(1-2y)+3 | | 5t+34=-2(1-7t) | | 3x+2.1=84 | | 1/8(x-16) | | K+25=50 | | 17x-70=180 | | 6x-7-x+37=6-15x | | b=66.67(34) | | -4(3x-1)=3(3-4x)-5 | | 3.2x=6.4 | | 567-43x=123 | | 288/36=x | | p=66.67(34) | | -3a+9-7=29+6a | | x^7+3x+4=8 | | 3*96=x | | R-12=20 |