If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( b )
b = 0
b = 0
b = 0
b in (-oo:0) U (0:+oo)
-1/b = -2 // + 2
2-1/b = 0
-1*b^-1 = -2 // : -1
b^-1 = 2
-1 < 0
1/(b^1) = 2 // * b^1
1 = 2*b^1 // : 2
1/2 = b^1
b = 1/2
b = 1/2
| X*1/3x | | Ln(x^2-4)^1/2 | | 7a-4-a=-3(1-3a)-(a+5) | | -2(7x-5)=-116 | | 6(n-7)=-90 | | -5(1-3x)+5x=3(6x-5) | | 3x^2+7xy+5y^2-6x-7y+15=0 | | 5(-1x-2)=-30 | | y=63whatisx | | -91=-3x-8(5x+6) | | 1+5(7n+8)=-5n-39 | | 5t-d=p | | 2x+9=5x-21 | | 8z-6=z+6 | | 4/b=4 | | (X)(x)-4x=12 | | 20x=4000000000000000000000000000000000 | | -1+7x=5x-11 | | 2x+9=8-7x | | -6(6n+3)=-234 | | 7x-5=6x-w | | 5+7x=-x+69 | | 4/b=8 | | 8(1+3x)-1=-7(x-1) | | Log1/5x=-1 | | 8/X=10/6 | | 4x+1=6x+9 | | 16-5=8-7x | | 1/3a-2-2/3a-5 | | -6x+5=-7x+1 | | -87=-3(7k+8) | | Y=2x+723 |