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Veva Garcia edited untitled.tex
about 8 years ago
Commit id: 7abfc64a9ee6f52a1372511fd55724246ccaf9bb
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\begin {problem}[1.10]\\
Fix $a \in \mathbb{C}$ and $b \in \mathbb{R}.$ Show that the equation $\left|z^2\right|+Re(az)+b=0$ has a solution if and only if $\left|a^2 \right| \geq 4b.$ When solutions exist, show the solution set is a circle.
\begin{proof}
\textit{Proof:}
Let $a \in \mathbb{C}$, $b \in \mathbb{R}$ and $z \in \mathbb{C}$. Then $z=x+yi$ and $a=c+di$ for some $x,y,c,d \in \mathbb{R}$.\\
So, assume $\left|z^2\right|+Re(az)+b=0$