Use CDATA and tex-math for LaTeX markup
Capture LaTeX markup in a CDATA section enclosed by tex-math
<tex-math notation="LaTeX"><![CDATA[$\frac {\eta }{2b}=1$]]></tex-math>
Capture LaTeX markup in a CDATA section enclosed by tex-math
<tex-math notation="LaTeX"><![CDATA[$\frac {\eta }{2b}=1$]]></tex-math>