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)
1/2 = 5.7/b // - 5.7/b
1/2-(5.7/b) = 0
1/2-5.7*b^-1 = 0
-5.7*b^-1 = -1/2 // : -5.7
b^-1 = 0.0877193
-1 < 0
1/(b^1) = 0.0877193 // * b^1
1 = 0.0877193*b^1 // : 0.0877193
11.39999977 = b^1
b = 11.39999977
b = 11.39999977
| -2(k-8)=40+2k | | -4*5=7+t | | 3z=1.1+3.1 | | x^3+10x=5 | | p=13/12 | | 6+x+7x=-2x-10 | | 6-24=-3z | | 15/19=60/m | | -3.2w=-2-4.5 | | -13+16=-3(x+4) | | -33+6x=7(1-2x) | | R2/2r^3 | | 7x+5-2x=4+4x+10 | | 2=1/5x | | 30/q=5/6 | | -3y+12=2(4-y) | | -t=r+pic | | 9x+1=24 | | g/9=11 | | 559/32= | | 4(0)=2y+8 | | 9/8t=-2/9 | | 1.2=7x | | ln(7t-4)=3 | | 11x-14=3x+82 | | 2g+8+g=20 | | 7=1.2/x | | 261/1.9=x/6 | | 8/3m=28 | | -9-v-8b=-23 | | X^2+y^2+2x-6-15=0 | | 5+n=51 |