d U = d q d w
Solve for U
\left\{\begin{matrix}\\U=dqw\text{, }&\text{unconditionally}\\U\in \mathrm{R}\text{, }&d=0\end{matrix}\right.
Solve for d
\left\{\begin{matrix}\\d=0\text{, }&\text{unconditionally}\\d=\frac{U}{qw}\text{, }&w\neq 0\text{ and }q\neq 0\\d\in \mathrm{R}\text{, }&\left(q=0\text{ or }w=0\right)\text{ and }U=0\end{matrix}\right.
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dU=d^{2}qw
Multiply d and d to get d^{2}.
dU=qwd^{2}
The equation is in standard form.
\frac{dU}{d}=\frac{qwd^{2}}{d}
Divide both sides by d.
U=\frac{qwd^{2}}{d}
Dividing by d undoes the multiplication by d.
U=dqw
Divide d^{2}qw by d.
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