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)
3/w = 20.2 // - 20.2
3/w-20.2 = 0
3*w^-1 = 20.2 // : 3
w^-1 = 6.73333333
-1 < 0
1/(w^1) = 6.73333333 // * w^1
1 = 6.73333333*w^1 // : 6.73333333
0.14851485 = w^1
w = 0.14851485
w = 0.14851485
| 62=18 | | 2x^2-6x+8= | | 4x*5y=1600 | | 12-2x=60 | | log(x/10^-4)=6.8 | | (((2x+1)(4x+1)).5)x=114 | | 5y^2-12=0 | | 60-12=2x | | 3/5*1/8 | | (3.2+n)=(n+1.43) | | 9x+4y=386 | | 1+6x-0.5(2x+6)=49 | | 2000/35000 | | (2x+1)(4x+1)(x)=114 | | w-15n=5(-3n+2) | | (2/5)x75 | | x^2-11x-9x+99=0 | | h=9ky | | 5p^2-9p-2= | | ilove=you | | 8x^2+10+4=0 | | 32=-8u+2(u+4) | | 5n-n=20 | | -12b-9+2b-b=8 | | B-56=9.32 | | 5b^2-8bz-13z^2= | | (n+2)(n+4)=0 | | 29b=290 | | 3x^3-30x+27=0 | | 5-y=30 | | 78=6r | | 17-4=16 |