knitr
out.width
fig.width
render_book()
serve_book()
toc_depth
fig.cap
fig.pos="H"
axis description cs
declare function
pgfmathparse
pgfmathdeclarefunction
|-
-|
pgfplotsinvokeforeach
addplot+
%>%
dplyr
ggplot2
%/%
rep
seq
<<-
tableone
lifelines
%r
https://en.wikipedia.org/wiki/Basel_problem
https://www.bilibili.com/video/BV1wW421A75k
https://www.youtube.com/watch?v=d-o3eB9sfls
https://www.youtube.com/playlist?list=PL300nJOfVNKZH3H-2J_g1bZRYOx-dQUp3
https://zhuanlan.zhihu.com/p/672704574