请问定理环境出了什么问题呀

2020-02-10 19:37发布

```tex \begin{theorem}{达布定理} $\text{设}f\left(x\right)\text{在}\left[a,b\right]\text{上可导},$ $\text{且...

```tex \begin{theorem}{达布定理} $\text{设}f\left(x\right)\text{在}\left[a,b\right]\text{上可导},$ $\text{且}f'_-\left(a\right)\text{与}f'_{+}\left(b\right)\text{不相等},$ $c\text{是夹在}f'_-\left(a\right)\text{与}f'_{+}\left(b\right)\text{之间的一个数}$, $\text{则存在}\xi\in\left(a,b\right)\text{使得}f'\left(\xi\right)=c$ \end{theorem} ```![](https://pics.latexstudio.net/data/images/202002/c50bf974f6a80ac.png)
2条回答
LVQAQ
2020-02-10 20:08
这么写: ```tex \documentclass[UTF8]{ctexart} \usepackage{amsmath} \newtheorem{theorem}{Theorem} \begin{document} \begin{theorem}{达布定理} $\text{设}f\left(x\right)\text{在}\left[a,b\right]\text{上可导},$ $\text{且}f’-\left(a\right)\text{与}f’{+}\left(b\right)\text{不相等},$ $c\text{是夹在}f’-\left(a\right)\text{与}f’{+}\left(b\right)\text{之间的一个数}$, $\text{则存在}\xi\in\left(a,b\right)\text{使得}f’\left(\xi\right)=c$ \end{theorem} \end{document} ```

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