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)
1/0.5 = 3/x // - 3/x
1/0.5-(3/x) = 0
1/0.5-3*x^-1 = 0
-3*x^-1 = -2 // : -3
x^-1 = 2/3
-1 < 0
1/(x^1) = 2/3 // * x^1
1 = 2/3*x^1 // : 2/3
3/2 = x^1
x = 3/2
x = 3/2
| 10x^4+5x^3+2x^2+x=o | | 201-w=249 | | 261=90-u | | -7(v+2)+4v+7=6v+8 | | b/10-3/5-1/2 | | 5=17+x | | g(x)=-0.6x^2+3x+6 | | X+6=4x+15 | | 3/9y-4=-1 | | 42-w=212 | | y=2(x-5)(x-1) | | 104-y=179 | | -3a+9+5a=9a-4a | | 211/4=h/8 | | (X-7)(5+x)=0 | | 173=80-w | | -3a+16-5a=4a-6a | | 12-4x+10=14 | | 10y+4x=2 | | Y-1.3=0.6 | | -8(2x+25)-(103-19x)= | | 41-u=263 | | 0.2a-0.8=1.2-0.3a | | 44(43-y)= | | 550=12(x+25) | | 80+20x=50+0.30x | | 44(43-y)=Y+54 | | 0.50x+0.45(30)=27.5 | | 8b+3(4b+2)=6b-2(5-5b) | | 4x+3=-6+2x+23 | | 4x-4y-4z=16 | | (.06)(1/2) |