当我尝试构建平板电脑时有关 TEX 的问题

当我尝试构建平板电脑时有关 TEX 的问题

抱歉,当我尝试在 LaTeX 中构建平板电脑时,出现以下错误消息:

!Missing \endgroup inserted.
              <inserted text>
                            \endgroup
1.141  & \multicolumn{2}{c|c|}{Cash Flow at}
                                         \\ \cline{3-4}

这是我在 LaTeX 中的原始代码。请问如何修改才能避免错误?

\begin{tabular}{|c|c|r|r|}
\hline
& \multicolumn{2}{c|c|}{Cash Flow at} \\ \cline{3-4}
\textbf{Action} & \textbf{Cash flow at $t=0$} & \textbf{$t=3$} & \textbf{$t=6$} \\ \hline
Lend \$3,000,000 in 3-years markets & -\$3,000,000 & +\$3,649,428.891  &0 \\  \hline
Roll over at $t=3$ for 3 years   & 0 &  -\$3,649,428.891 & +\$3,649,428.891+\tilde y\\ \hline
Borrow PV(\$3,649,428.891) in 6-years markets  & +\$3,100,554.785 &0 &-\$3,649,428.891 \\ \hline
\textbf{Total} & +\$100,554.7855 &0  & +\tilde y  \\  \hline
\end{tabular} \\

答案1

在您的示例中,基本上存在两个问题:

  1. 该错误是由于\multicolumn{2}{c|c|}{Cash Flow at}其中只需要一个列说明符作为第二个参数而引起的,该参数应该是\multicolumn{2}{c|}{Cash Flow at}
  2. 另一个问题是\tilde y哪个应该在$...$符号里面,即$\tilde{y}$

修正后的 MWE 为:

\documentclass{article}

\usepackage{geometry}

\begin{document}

\begin{tabular}{|c|c|r|r|}
\hline
&& \multicolumn{2}{c|}{Cash Flow at} \\ \cline{3-4}
\textbf{Action} & \textbf{Cash flow at $t=0$} & \textbf{$t=3$} & \textbf{$t=6$} \\ \hline
Lend \$3,000,000 in 3-years markets & -\$3,000,000 & +\$3,649,428.891  &0 \\  \hline
Roll over at $t=3$ for 3 years   & 0 &  -\$3,649,428.891 & +\$3,649,428.891+$\tilde {y}$\\ \hline
Borrow PV(\$3,649,428.891) in 6-years markets  & +\$3,100,554.785 &0 &-\$3,649,428.891 \\ \hline
\textbf{Total} & +\$100,554.7855 &0  & +$\tilde {y}$  \\  \hline
\end{tabular}

\end{document}

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