If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( v )
v = 0
v = 0
v = 0
v in (-oo:0) U (0:+oo)
(9*v^-2)/3 = 16 // - 16
(9*v^-2)/3-16 = 0
3*v^-2 = 16 // : 3
v^-2 = 16/3
-2 < 0
1/(v^2) = 16/3 // * v^2
1 = 16/3*v^2 // : 16/3
3/16 = v^2
v^2 = 3/16 // ^ 1/2
abs(v) = (3/16)^(1/2)
v = (3/16)^(1/2) or v = -(3/16)^(1/2)
v in { (3/16)^(1/2), -(3/16)^(1/2) }
| 4(x-5)=-5 | | 3n+5+5n-6= | | X-5/6-1=x-8/7 | | -4x+4y=-28 | | (12/7)=6y | | 11x-5+8x+90=180 | | 5(4-16)=20 | | 4x+5y=-76 | | 63x+9=-36 | | (6/7)*v=42 | | 105=23x+1+11x+2 | | 20x^4-20x^2+3=0 | | 5u+5=-10 | | 3x+5y=-67 | | 4+5m=12+3m | | 12x^3-12x^2+8=0 | | (X/15)=15 | | x+70+75+x+45=180 | | 2(x-4)=3x+32 | | 20a+13b+6c+6c-6b-4a= | | -3x-y=26 | | (y^1/8)=-1 | | 63x+9=36 | | 2t-11=15 | | -3x+3y=30 | | 15x-3=8x+16+44 | | cotg4x/cotg3x | | 8u=4v-34 | | 4x+-2y=24 | | -4x+y=-27 | | 8x=6x-10+30 | | 8x/3-8=8 |