Boxes around aligned equations in LaTeX

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• September 16, 2018
• LaTeX  

Example of how to get boxes around equations in the aligned environment in LaTeX:

\begin{equation}
    \boxed{
    \begin{aligned}
        x^2 + 1 &= 2 \\
        x^4 + 1 &= 3
    \end{aligned}
    }
\end{equation}

I’d like to show the result, but at time of writing I realize I don’t have my workflow set up to properly render LaTeX equations in the final Hugo post. Here’s what I get instead: (if this looks right, then I must have fixed it.)

\[\begin{equation} \boxed{ \begin{aligned} x^2 + 1 &= 2 \\ x^4 + 1 &= 3 \end{aligned} } \end{equation}\]