Fumadocs doesn't bundle with other plugins, you have to manually install
those plugins.
Add the remark/rehype plugins you have installed above.
The code might be vary depending on your content source, here is an example for Fumadocs MDX:
In order to make it looks great on the client, add the following to root layout:
Type some TeX expression in your documents
c=±a2+b2
Long equations example
Tf(z)=k=0∑∞2πi(z−c)k∫γ(w−c)k+1f(w)dw=2πi1∫γw−cf(w)k=0∑∞(w−cz−c)kdw=2πi1∫γw−cf(w)(1−w−cz−c1)dw=2πi1∫γw−zf(w)dw=f(z),