f ( v ) = - \frac { 1 } { 2 } v ^ { - 1 } d v
Solve for d
d=-2fv
v\neq 0
Solve for f
f=-\frac{d}{2v}
v\neq 0
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-\frac{1}{2}v^{-1}dv=fv
Swap sides so that all variable terms are on the left hand side.
-\frac{1}{2}\times \frac{1}{v}dv=fv
Reorder the terms.
-\frac{1}{2}\times 2dv=fv\times 2v
Multiply both sides of the equation by 2v, the least common multiple of 2,v.
-dv=fv\times 2v
Multiply -\frac{1}{2} and 2 to get -1.
-dv=fv^{2}\times 2
Multiply v and v to get v^{2}.
\left(-v\right)d=2fv^{2}
The equation is in standard form.
\frac{\left(-v\right)d}{-v}=\frac{2fv^{2}}{-v}
Divide both sides by -v.
d=\frac{2fv^{2}}{-v}
Dividing by -v undoes the multiplication by -v.
d=-2fv
Divide 2fv^{2} by -v.
fv=-\frac{1}{2}\times \frac{1}{v}dv
Reorder the terms.
fv\times 2v=-\frac{1}{2}\times 2dv
Multiply both sides of the equation by 2v, the least common multiple of 2,v.
fv^{2}\times 2=-\frac{1}{2}\times 2dv
Multiply v and v to get v^{2}.
fv^{2}\times 2=-dv
Multiply -\frac{1}{2} and 2 to get -1.
2v^{2}f=-dv
The equation is in standard form.
\frac{2v^{2}f}{2v^{2}}=-\frac{dv}{2v^{2}}
Divide both sides by 2v^{2}.
f=-\frac{dv}{2v^{2}}
Dividing by 2v^{2} undoes the multiplication by 2v^{2}.
f=-\frac{d}{2v}
Divide -dv by 2v^{2}.
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