左对齐方程块 [英] Left align block of equations

问题描述

我想左对齐一个方程块.块本身的方程式是对齐的，但这与我的问题完全无关！我想让方程左对齐而不是一直居中，因为窄居中的方程看起来很笨.

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，我想左对齐这个

egin{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}}
ight) \
    v &= uuline{69.08...degree}
end{align*}    

还有这个

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

这是怎么做到的?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.

Try to use the fleqn document class option.

documentclass[fleqn]{article}

(另请参阅 http://en.wikibooks.org/wiki/LaTeX/Basics 获取其他选项的列表.)

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

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