Display LaTeX equations in a shiny dashboard app in R -

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i display rmd file latex equations in shiny dashboard app. i've run problems using includemarkdown() , includehtml(). here simplified app of i'm trying achieve. here app.r:

library(shinydashboard) ui <- dashboardpage(     dashboardheader(title='my test application'),     dashboardsidebar(         sidebarmenu(             menuitem("theory", tabname = "theory", icon = icon("book"))         )     ),     dashboardbody(          tabitems(              tabitem(tabname="theory",                     includemarkdown("theory.rmd")                     #includemarkdown("theory.md")                     #includehtml("theory.html")             )         )         ) )  server <- function(input, output){  }  shinyapp(ui = ui, server = server)

my theory.rmd file:

--- title: "theory" output:    html_document:     mathjax: "http://cdn.mathjax.org/mathjax/latest/mathjax.js?config=tex-ams-mml_htmlormml" --- here equation:  $$q = a(h − c)^b$$

note in order run app, theory.rmd , app.r have saved in same directory (e.g. working directory) hand have have exact names. obtain markdown theory.md file of rmd file, do:

library(knitr) knit("theory.rmd","theory.md")

and obtain theory.html file, press knit html button in theory.rmd file

when running app in browser or rstudio window, includemarkdown("theory.rmd") or includemarkdown("theory.md"), not render equations starts default in theory menu item, this: enter image description here using includehtml("theory.html") equations render correctly screen display shortened, , default not start in menu item, this:enter image description here

but when clicked on theory correctly rendered equations: enter image description here

is there way fix this? many thanks!

it possible wrap includemarkdown() in withmathjax(), won't need change .md-file:

withmathjax(includemarkdown("theory.md"))

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