我如何添加第2行。 第3行. 在第二行第一列，以便它们与第二列中的对应项对齐？
\documentclass[a4paper,english,12pt,oneside]{book}
\usepackage[left=20mm]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{refstyle}
\usepackage{subcaption}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{enumerate}
\usepackage{epstopdf}
\usepackage{breqn}
\usepackage{mathtools}
%-------------------------------------------------------------------------------
%\usepackage{a4wide}
\usepackage{amsfonts}
\usepackage{amstext}
\usepackage{amsthm}
\usepackage{newlfont}
\usepackage{graphics}
\usepackage{tabularx}
\usepackage{geometry}
\usepackage{lscape}
\usepackage{multirow}
\usepackage{epsfig}
\usepackage{bm,amsmath}
\usepackage{color}
\definecolor{violet}{rgb}{0.7,0.2,0.8}
\definecolor{bluevert}{rgb}{0,0.9,1}
\definecolor{trustcolor}{rgb}{0.71,0.14,0.07}
\definecolor{PinkTriton}{rgb}{.708 ,.055 ,.275}
\definecolor{RedTriton}{rgb}{.491 ,.097 ,.066} % couleur rouge du triton
\definecolor{OrangeTriton}{rgb}{.953 ,.502 ,.04}
%-------------------------------------------------------------------------------
\begin{document}
\begin{table}[ht!]
\centering
\begin{tabular}{|c|l|}
\hline
\textbf{Input} & Given $ A|_{\theta = 0.5} = \begin{bmatrix} -1.0000 & 0.4794\\ 1.0000 & 0.2500\\ 0.2298 & 0.0417\\ 0.5000 & -0.5000\\ 0.7702 & 0.3750\\ 0.1250 & 0.5000 \end{bmatrix}$,
$ A_{\theta}^{'}|_{\theta = 0.5} = \begin{bmatrix} -2.000 & 0.8776\\ 2.0000 & 1.0000\\ 0.8415 & 0.2500\\ 1.0000 & 2.0000\\ -0.8415 & 1.7500\\ 0.7500 & 1.0000 \end{bmatrix}$\\
\hline
\textbf{line1.} & Compute $ M = Q^TA_{\theta}^{'}R^{-1} = \begin{bmatrix} 1.4216 & 1.7145\\ -0.4229 & 0.9862 \end{bmatrix}$.\\
& Factorize $M L+D+U = \begin{bmatrix} 0 & 0\\ -0.4229 & 0 \end{bmatrix}+\begin{bmatrix} 1.4216 & 0\\ 0 & 0.9862 \end{bmatrix}+\begin{bmatrix} 0 & 1.7145\\ 0 & 0 \end{bmatrix}$.\\
& Compute $R_{\theta}^{'} = (L^T+D+U)R= \begin{bmatrix} 2.4257 & 1.1468\\ 0 & 0.9510 \end{bmatrix}$ \\
\hline
\end{tabular}
\caption{IRMf-TEP Comparaison}
\label{tab:dif_irm_tep}
\end{table}\newpage
\end{document}
答案1
只需在相关内容前添加即可&：
\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\begin{document}
\begin{table}[ht!]
\centering
\begin{tabular}{|c|l|}
\hline
\textbf{Input} & Given $ A|_{\theta = 0.5} = \begin{bmatrix} -1.0000 & 0.4794\\ 1.0000 & 0.2500\\ 0.2298 & 0.0417\\ 0.5000 & -0.5000\\ 0.7702 & 0.3750\\ 0.1250 & 0.5000 \end{bmatrix}$,
$ A_{\theta}'|_{\theta = 0.5} = \begin{bmatrix} -2.000 & 0.8776\\ 2.0000 & 1.0000\\ 0.8415 & 0.2500\\ 1.0000 & 2.0000\\ -0.8415 & 1.7500\\ 0.7500 & 1.0000 \end{bmatrix}$\\
\hline
\textbf{line1.} & Compute $ M = Q^TA_{\theta}'R^{-1} = \begin{bmatrix} 1.4216 & 1.7145\\ -0.4229 & 0.9862 \end{bmatrix}$.\\
\textbf{line2.} & Factorize $M L+D+U = \begin{bmatrix} 0 & 0\\ -0.4229 & 0 \end{bmatrix}+\begin{bmatrix} 1.4216 & 0\\ 0 & 0.9862 \end{bmatrix}+\begin{bmatrix} 0 & 1.7145\\ 0 & 0 \end{bmatrix}$.\\
\textbf{line3.} & Compute $R_{\theta}' = (L^T+D+U)R= \begin{bmatrix} 2.4257 & 1.1468\\ 0 & 0.9510 \end{bmatrix}$ \\
\hline
\end{tabular}
\caption{IRMf-TEP Comparison}
\label{tab:dif_irm_tep}
\end{table}
\end{document}
请注意，a4wide已弃用（且有缺陷）；也不newlfont应该在新文档中使用。我删除了示例中不必要的包。
这也是^{'}错误的，它应该是公正的'。
我还建议采用不同的表格方法booktabs。垂直线被抑制，\addlinespace可用于提供更多空间并更好地分隔行。
\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{booktabs}
\begin{document}
\begin{table}[ht!]
\centering
\begin{tabular}{@{}ll@{}}
\toprule
\addlinespace
\textbf{Input} & Given $ A|_{\theta = 0.5} = \begin{bmatrix} -1.0000 & 0.4794\\ 1.0000 & 0.2500\\ 0.2298 & 0.0417\\ 0.5000 & -0.5000\\ 0.7702 & 0.3750\\ 0.1250 & 0.5000 \end{bmatrix}$,
$ A_{\theta}^{'}|_{\theta = 0.5} = \begin{bmatrix} -2.000 & 0.8776\\ 2.0000 & 1.0000\\ 0.8415 & 0.2500\\ 1.0000 & 2.0000\\ -0.8415 & 1.7500\\ 0.7500 & 1.0000 \end{bmatrix}$\\
\addlinespace
\midrule
\addlinespace
\textbf{line1.} & Compute $ M = Q^TA_{\theta}^{'}R^{-1} = \begin{bmatrix} 1.4216 & 1.7145\\ -0.4229 & 0.9862 \end{bmatrix}$.\\
\addlinespace
\textbf{line2.} & Factorize $M L+D+U = \begin{bmatrix} 0 & 0\\ -0.4229 & 0 \end{bmatrix}+\begin{bmatrix} 1.4216 & 0\\ 0 & 0.9862 \end{bmatrix}+\begin{bmatrix} 0 & 1.7145\\ 0 & 0 \end{bmatrix}$.\\
\addlinespace
\textbf{line3.} & Compute $R_{\theta}^{'} = (L^T+D+U)R= \begin{bmatrix} 2.4257 & 1.1468\\ 0 & 0.9510 \end{bmatrix}$ \\
\addlinespace
\bottomrule
\end{tabular}
\caption{IRMf-TEP Comparison}
\label{tab:dif_irm_tep}
\end{table}
\end{document}
