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 :
\boldmath
\bfseries
--- 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 $E(b_R) = \beta_1 + P\beta_2$.**
输出:
当然最好将代码添加到某些代码中 tex 包含的文件。
tex