Math & Science ⇒ How to not indent \align* environment?

[ghostanime2001]

When I use the \align* environment I am okay with the vertical space it sets by default but the formula in between this environment gets indented. How can I stop it doing that? i want it to be aligned with the page number to the left as per the following example. Here is the code

Code: Select all

\documentclass[fleqn]{article}
\setlength{\parindent}{0in}
\usepackage{fullpage}
\usepackage[margin=1in]{geometry}
\usepackage{graphicx}
\usepackage{amsmath}
\allowdisplaybreaks
\usepackage{xfrac}
\usepackage[makeroom]{cancel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{siunitx}
\pagestyle{empty}
\sisetup{%
  output-decimal-marker={.},
  load-configurations=abbreviations,
  group-separator={,},
  per-mode=fraction,
  fraction-function=\sfrac}
\usepackage{fix-cm}
\begin{document}
\begin{enumerate}
\item
\begin{minipage}[t]{2in}
$\begin{aligned}[t]
\Delta t&=\text{9.09 \cancel{hr}}\left(\dfrac{\text{60 \cancel{min}}}{\text{1 \cancel{hr}}}\right)\left(\dfrac{\text{60 s}}{\text{1 \cancel{min}}}\right)=\text{32,724 s} \\
\omega&=\text{?}
\end{aligned}$
\end{minipage}
\begin{align*}
\omega=\dfrac{\theta}{\Delta t}=\dfrac{\text{1.34 rad}}{\text{32,724 s}}=\text{\num{4.09e-5} rad/s}
\end{align*}
\end{enumerate}
\end{document}

[Stefan Kottwitz]

Set the length \mathindent to zero:

Code: Select all

\setlength{\mathindent}{0pt}

Stefan

[ghostanime2001]

In the preamble?

[Stefan Kottwitz]

Yes, then it's for all such math environments. Or later, if you want it later. You can even use within environments, if you wish to keep the effect local.

Stefan

[ghostanime2001]

It doesn't seem to work

[Stefan Kottwitz]

It does. If you use align* within enumerate, it aligns to the left regarding the items. Not to the left of the number. If you desire that, first end the enumerate environment, then start align*.

Stefan

[ghostanime2001]

I think u misunderstood me. But anyway, i got it fixed

[Stefan Kottwitz]

You could explain what has been meant. And how you fixed it (code? pdf?), this would also explain what the problem has been, originally.

Stefan

[ghostanime2001]

I wrote "\setlength{\mathindent}{0pt}" exactly one line before \begin{document} and for equations i wanted to have a nice vertical space without manually setting \vspace i set \begin{align*} into math equations i wanted to have this good vertical space and it worked. If you still don't know what I mean i can show you a PDF?

[Stefan Kottwitz]

This explanation doesn't make it clearer. Well, the question was how to remove the indentation of align*, and this way it's left aligned.

Code: Select all

\documentclass[fleqn]{article}
\usepackage{amsmath}
\setlength{\mathindent}{0pt}
\begin{document}
\noindent Left aligned
\begin{align*}
x &= y
\end{align*}
\end{document}

align.png (2.2 KiB) Viewed 24066 times

Stefan