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For $A\subseteq M_n(\mathbb{F})$, $E\in M_n(\mathbb{F})$, where $E$ is an elementary matrix, then
$$\begin{align*}
\text{det}(AE)=\text{det}(A)\text{det}(E)=\text{det}(EA)
\end{align*}$$
Concepts
This follows for what each elementary row operation does to the determinant. It suffices to check for each elementary row operation that $E$ can correspond to.Hypothesis
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For $A\subseteq M_n(\mathbb{F})$, $E\in M_n(\mathbb{F})$, where $E$ is an elementary matrix, then
$$\begin{align*}
\text{det}(AE)=\text{det}(A)\text{det}(E)=\text{det}(EA)
\end{align*}$$
Concepts
This follows for what each elementary row operation does to the determinant. It suffices to check for each elementary row operation that $E$ can correspond to.Hypothesis
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Coming soonProof
Coming soon
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