方程的左对齐块 [英] Left align block of equations

问题描述

我想左对齐一个方程组.块本身中的方程式是对齐的，但这与我的问题根本无关！我想左对齐方程而不是一直将它们居中，因​​为它看起来很笨，居中方程很窄.

I want to left align a block of equations. The equations in the block itself are aligned, but that's not related at all to my question! I want to left align the equations rather than have them centered all the time, because it looks dumb with narrow centered equations.

例如，我要左对齐

\begin{align*}
    |\vec a| &= \sqrt{3^{2}+1^{2}} = \sqrt{10} \\
    |\vec b| &= \sqrt{1^{2}+23^{2}} = \sqrt{530} \\ 
    \cos v &= \frac{26}{\sqrt{10} \cdot \sqrt{530}} \\
    v &= \cos^{-1} \left(\frac{26}{\sqrt{10} \cdot \sqrt{530}}\right) \\
    v &= \uuline{69.08...\degree}
\end{align*}    

也是这个

\begin{align*}
    f(x) = -1.25x^{2} + 1.5x
\end{align*}

这是怎么做的?如果可能的话.

How is this done? If it's even possible.

推荐答案

尝试使用 fleqn 文档类选项.

\documentclass[fleqn]{article}

(另请参见 http://en.wikibooks.org/wiki/LaTeX/Basics以获得其他选项的列表.)

(See also http://en.wikibooks.org/wiki/LaTeX/Basics for a list of other options.)

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