I cannot seem to make this work. My equation looks like this in plain text:
P[C] >= MPC
I can use this to get some display:
P[C] >= MPC
but when I try, what I think the book is suggesting:
$$P\left[C\right]\ \ge\ MPC$$
I do not get an equation but a reprint of the text inside the dollar signs.
If I knit the single page with equations I get the correct equation:
P[C] ≥ MPC
Why can I not get the equation to work creel;y in the bookdown book?