If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( w )
w = 0
w = 0
w = 0
w in (-oo:0) U (0:+oo)
7 = 35/w // - 35/w
7-(35/w) = 0
7-35*w^-1 = 0
-35*w^-1 = -7 // : -35
w^-1 = 1/5
-1 < 0
1/(w^1) = 1/5 // * w^1
1 = 1/5*w^1 // : 1/5
5 = w^1
w = 5
w = 5
| 5logx=x/4 | | n=2n+3(n+1)+3n(n+4) | | -9=u-1 | | z^3-2iz^2+3z=0 | | 2(6-x)+3(4-x)=4 | | 6n^2+2n-1000=0 | | Sin(x+0.5)=0 | | 3(9-x)+5(20-2x)=36 | | 7(7-x)=21 | | 7(7-x)=20 | | 3(10-4x)=6 | | 35t=-24 | | h/39=13 | | 5(14-5x)=20 | | 45-6(x+1)=3 | | 9y-24y= | | 45+6x=3 | | 2x+7=x+111 | | 120/6= | | -103-17=x | | 16i+2=30i-2 | | 2log(2x+3)=2 | | 1+3sinx=0 | | 2ln(2x+3)=2 | | -(y+42)=-2(y+6) | | 230-125= | | 8x-2y=3x+y | | 3.1415926535897932384626433832795*2=x | | Π=1/3 | | 57.77=12x+6y | | x^67+9=10 | | 2x+10+x+2x+10+x=32 |