# Is it possible to use display math mode in hidden text?

I sometimes like to use the ability to hide text when writing an answer, but I've noticed that when I try to write something in display math mode (i.e. maths wrapped in double dollar signs), it doesn't display as such but rather as regular maths mode (i.e. as if the maths was wrapped in single dollar signs). When I try to fix this, the text no longer remains hidden.

• Well, the line starting with $f(b)$ is hidden, and shown in display math to me... Perhaps the issue is browser or MathJax renderer (MathML, HTML/CSS, SVG) related? – Lord_Farin Apr 26 '13 at 7:19