如何在带有LaTeX表达式的句子中应用粗体或标题格式？

您可以添加一些自动打开的代码

\boldmath

一旦

\bfseries

使用，c.f。

https://tex.stackexchange.com/a/124311/140850

：

<code>
  ---
output: pdf_document
\makeatletter
\g@addto@macro\bfseries{\boldmath}
\makeatother
(a) Prove that $E(b_R) = \beta_1 + P\beta_2$.
(a) Prove that $E(b_R) = \beta_1 + P\beta_2$.
(a) How to indent this line, and boldface everything: Prove that $E(b_R) = \beta_1 + P\beta_2$.  
*(a) How can I make this an un-ordered list, all boldface: Prove that $E(b_R) = \beta_1 + P\beta_2$.
    +(a) Can this line be a subpoint to the first, in all boldface? Prove that $E(b_R) = \beta_1 + P\beta_2$. 
</code>
  

输出：

当然最好将代码添加到某些代码中

tex

包含的文件。