将方程式垂直居中在图像旁边？

Question

因此，我尝试使用minipage环境将方程式放在图形旁边，但方程式不会在环境中垂直居中以匹配图片。我遗漏了什么？

\documentclass[12pt]{article}
\usepackage{amsmath,amssymb,amsthm,textcomp}
\usepackage{graphicx}

\begin{document}


\begin{figure}[H]
\centering
\begin{minipage}[t]{.45\textwidth}
  \centering
\includegraphics[scale=0.7]{parallelplates}
  \captionof{figure}{A diagram showing the uniform electric field between two parallel capacitor plates. placeholder citation}
  \label{fig:parallelplates}
\end{minipage}%
\hfil
\begin{minipage}[t]{.45\textwidth}
  \centering
  \begin{equation}
C=Q\Delta V
  \label{eq:capacitance}
  \end{equation}
  \begin{equation}
  \frac{1}{C_T}=\frac{1}{C_1}+\frac{1}{C_2}+\cdots + \frac{1}{C_n}
  \label{eq:capseries}
  \end{equation}
  \begin{equation}
  C_T=C_1+C_2+\cdots + C_n
  \label{eq:capparallel}
  \end{equation}
 \end{minipage}
 \end{figure}
\end{document}

谢谢！这是一张图片！

Answer 1

这是你想要的吗？

\documentclass[12pt]{article}
\usepackage{amsmath,amssymb,amsthm,textcomp}
\usepackage{graphicx}
\usepackage{caption}  % inserted
\usepackage{showframe}% just to exemplify
\begin{document}


    \begin{figure}[h]
        \centering
        \begin{minipage}[c]{.45\textwidth}% changed to c
            \centering
            % I changed the image width
            \includegraphics[width=\linewidth]{example-image-a}
            \captionof{figure}{A diagram showing the uniform electric field between two parallel capacitor plates. placeholder citation}
            \label{fig:parallelplates}
        \end{minipage}%
        \hfil
        \begin{minipage}[c]{.45\textwidth}% changed to c
            \centering
            \begin{equation}
            C=Q\Delta V
            \label{eq:capacitance}
            \end{equation}
            \begin{equation}
            \frac{1}{C_T}=\frac{1}{C_1}+\frac{1}{C_2}+\cdots + \frac{1}{C_n}
            \label{eq:capseries}
            \end{equation}
            \begin{equation}
            C_T=C_1+C_2+\cdots + C_n
            \label{eq:capparallel}
            \end{equation}
        \end{minipage}
    \end{figure}

% another option

\noindent%
        \begin{minipage}[c]{.49\textwidth}
    \centering
    \includegraphics[width=\linewidth]{example-image-a}
    \captionof{figure}{A diagram showing the uniform electric field between two parallel capacitor plates. placeholder citation}
    \label{fig:parallelplates}
\end{minipage}%
\hfill
\begin{minipage}[c]{.49\textwidth}
    \centering
    \begin{equation}
    C=Q\Delta V
    \label{eq:capacitance}
    \end{equation}
    \begin{equation}
    \frac{1}{C_T}=\frac{1}{C_1}+\frac{1}{C_2}+\cdots + \frac{1}{C_n}
    \label{eq:capseries}
    \end{equation}
    \begin{equation}
    C_T=C_1+C_2+\cdots + C_n
    \label{eq:capparallel}
    \end{equation}
\end{minipage}
\end{document}