Solve for a
\left\{\begin{matrix}\\a=0\text{, }&\text{unconditionally}\\a\in \mathrm{R}\text{, }&x=0\end{matrix}\right.
Solve for V
V\in \mathrm{R}
x=0\text{ or }a=0
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2ax=-\frac{\mathrm{d}}{\mathrm{d}y}(V)
Subtract \frac{\mathrm{d}}{\mathrm{d}y}(V) from both sides. Anything subtracted from zero gives its negation.
2xa=0
The equation is in standard form.
a=0
Divide 0 by 2x.
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