有没有办法改变 \displaystyle 的文本大小？

Question

我知道您可以在数学模式中应用不同的字体大小，例如\scriptstyle和\scriptscriptstyle。我正在寻找一种既能获得该“大小”又能保留“样式”的方法\displaystyle。

具体来说，我想在分数的分子和分母中设置极限，这\displaystyle使得表达式几乎超出分数线。这是我使用的代码...

$\displaystyle\lim_{x\to c}\left(\frac fg\right)=\frac{\displaystyle\lim_{x\to c}f}{\displaystyle\lim_{x\to c}g},$ provided $\displaystyle\lim_{x\to c}g\ne0.$

Answer 1

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You have

$\displaystyle\lim_{x\to c}\left(\frac fg\right)=\frac{\displaystyle\lim_{x\to c}f}{\displaystyle\lim_{x\to c}g},$ provided $\displaystyle\lim_{x\to c}g\ne0.$

However it should be (compare the final dot):

$\displaystyle\lim_{x\to c}\left(\frac fg\right)=\frac{\displaystyle\lim_{x\to c}f}{\displaystyle\lim_{x\to c}g},$ provided $\displaystyle\lim_{x\to c}g\ne0$.

You want to either


$\lim_{x\to c}\limits\left(\frac fg\right)=\frac{\textstyle\lim_{x\to c}\limits f}{\strut\textstyle\lim_{x\to c}\limits g},$ provided $\lim_{x\to c}\limits g\ne0$.

or:


$\lim_{x\to c}\limits\left(\frac fg\right)=\frac{\lim_{x\to c}\limits f}{\lim_{x\to c}\limits g},$ provided $\lim_{x\to c}\limits g\ne0$.

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