行首有不雅的空格

行首有不雅的空格

我正在为一个包含许多部分的问题提供解决方案。我希望各部分缩进\qquad。第一行的缩进量大约是其他行的两倍,但我使用了命令\noindent \qquad。我在第二行中也有与 c.) 和 d.) 答案相同的额外空格。(我希望这些第二行与 c.) 和 d.) 第一行的开头对齐。我使用命令\hphantom。)

\documentclass[10pt]{amsart}
\usepackage{}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsthm}

\begin{document}


\noindent \qquad a.) The domain of $f$ is $\mathbb{R}$. \\
\qquad b.) $y = 0$ is the equation of the asymptote to the graph of $f$. \\
\qquad c.) The intervals on which $f$ is increasing are $[-1, \, 0]$ and $[1, \, \infty)$, and the \\
\noindent \hphantom{\qquad c.) }intervals on which $f$ is decreasing are $(-\infty, \, -1]$ and $[0, 1]$. \\
\qquad d.) The intervals on which $f$ is concave up are $(-1.5, \, -0.5)$ and $(0.5, \, 1.5)$, and \\
\noindent \hphantom{\qquad d.) }the intervals on which  $f$ is concave down are $(-\infty, \, -1.5)$ and $(1.5, \, \infty)$. \\
\qquad e.) The coordinates of the critical points of $f$ are $(1, \, -1.75)$, $(0, \, 0)$, and $(1, -1.75)$. \\
\qquad f.) The coordinates of the inflection points of $f$ are $(-1.5, \, -1.25)$ and $(1.5, \, -1.25)$. \\
\qquad g.) $f > 0$ on $\emptyset$. \\
\qquad h.) $f^{\prime} > 0$ on $(-1, \, 0) \cup (1, \, \infty)$. \\
\qquad i.) $f^{\prime\prime} > 0$ on $(-1.5, \, -0.5) \cup (0.5, \, 1.5)$.
\vskip0.25in


\end{document}

答案1

在此处输入图片描述

\documentclass[10pt]{amsart}
\usepackage{}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsthm}

\begin{document}

\renewcommand\theenumi{\alph{enumi}}
\renewcommand\labelenumi{\theenumi.)}

\begin{enumerate}
\item The domain of $f$ is $\mathbb{R}$. 
\item $y = 0$ is the equation of the asymptote to the graph of $f$. 
\item The intervals on which $f$ is increasing are $[-1, \, 0]$ and $[1, \, \infty)$, and the 
intervals on which $f$ is decreasing are $(-\infty, \, -1]$ and $[0, 1]$. 
\item The intervals on which $f$ is concave up are $(-1.5, \, -0.5)$ and $(0.5, \, 1.5)$, and 
 the intervals on which  $f$ is concave down are $(-\infty, \, -1.5)$ and $(1.5, \, \infty)$.
\item The coordinates of the critical points of $f$ are $(1, \, -1.75)$, $(0, \, 0)$, and $(1, -1.75)$. 
\item The coordinates of the inflection points of $f$ are $(-1.5, \, -1.25)$ and $(1.5, \, -1.25)$. 
\item $f > 0$ on $\emptyset$. 
\item $f' > 0$ on $(-1, \, 0) \cup (1, \, \infty)$. 
\item f'' > 0$ on $(-1.5, \, -0.5) \cup (0.5, \, 1.5)$.
\end{enumerate}


\end{document}

看看原文有什么问题:

\noindent \qquad a.) The domain of $f$ is $\mathbb{R}$. \\

\noindent开始段落,然后\qquad添加 2em 的空间,然后你得到a. 一个根据宽度定位的括号a

\qquad b.) $y = 0$ is the equation of the asymptote to the graph of $f$. \\

前面的内容\\不开始一个段落,只是鼓励换行,换行后的空格作为 tex 段落对齐的一部分被丢弃,所以\qquad什么也不做。这就是为什么第一行(仅)看起来缩进的原因。)然后根据 的宽度定位,b这与 的宽度不同a

\qquad c.) The intervals on which $f$ is increasing are $[-1, \, 0]$ and $[1, \, \infty)$, and the \\

如上

\noindent \hphantom{\qquad c.) }intervals on which $f$ is decreasing are $(-\infty, \, -1]$ and $[0, 1]$. \\

\noindent在这个位置不做任何事情,对齐也会被关闭,因为)幻影中后面的空格将始终设置为其自然大小,但上面一行中的空格会缩小以适合该行。请注意,虽然其他的都\qquad被丢弃了,但这里的一个位于幻影框内,而不是在行首,因此不会被丢弃,所以这一行缩进\qquad

\qquad d.) The intervals on which $f$ is concave up are $(-1.5, \, -0.5)$ and $(0.5, \, 1.5)$, and \\

如上.....

答案2

正如 David 上面所说,使用列表并让 LaTeX 处理格式和编号会更好。这样做更容易阅读和书写,而且布局自动统一且易于更改。

为此我将使用枚举项包获取

在此处输入图片描述

使用:

\documentclass{article}
\usepackage{enumitem}
\usepackage{amssymb}
\usepackage{amsthm}

\begin{document}


\begin{enumerate}[label=\alph*.)]
\item The domain of $f$ is $\mathbb{R}$.
\item $y = 0$ is the equation of the asymptote to the graph of $f$.
\item The intervals on which $f$ is increasing are $[-1, \, 0]$ and $[1, \, \infty)$, and the
intervals on which $f$ is decreasing are $(-\infty, \, -1]$ and $[0, 1]$.
\item The intervals on which $f$ is concave up are $(-1.5, \, -0.5)$ and $(0.5, \, 1.5)$, and
the intervals on which  $f$ is concave down are $(-\infty, \, -1.5)$ and $(1.5, \, \infty)$.
\item The coordinates of the critical points of $f$ are $(1, \, -1.75)$, $(0, \, 0)$, and $(1, -1.75)$.
\item The coordinates of the inflection points of $f$ are $(-1.5, \, -1.25)$ and $(1.5, \, -1.25)$.
\item $f > 0$ on $\emptyset$.
\item $f' > 0$ on $(-1, \, 0) \cup (1, \, \infty)$.
\item $f'' > 0$ on $(-1.5, \, -0.5) \cup (0.5, \, 1.5)$.
\end{enumerate}


\end{document}

至于您的代码发生了什么。问题是\qquad在之后没有任何效果\\。这对我来说有点令人惊讶,我没想到这一点,但您可以通过考虑代码来看到这一点:

\documentclass[10pt]{amsart}
\parskip=1em
\begin{document}
  1. Normal line without \verb|\noindent|

  \noindent 2. Normal line with \verb|\noindent|

  \qquad 3. Normal line with \verb|\qquad|

  4. Normal line ending with \verb|\\|\\
  \qquad 5. Normal line with \verb|\qquad|
\end{document}

我期望看到除第 2 行之外的所有行都缩进(第 1 行和第 4 行缩进\parindent,第 3 行和第 5 行缩进\qquad)。但是,第 5 行没有缩进:

在此处输入图片描述

正如 David 所解释的那样,“换行符后的空格将被丢弃”。如果您确实需要在 a 后留一个空格,\\则可以使用\hspace*{2em}

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