I tried to write the following equation on the main site using MathJax:
The vertical bar and \$a_2=0\$ indicate that this equation should be evaluated at the point where the related parameter \$a_2\$ is zero. It's described further in the original post. This notation is also used in other mathematical contexts.
The traditional LaTeX notation for this symbol is \right|_{a_2=0}
, but experimentation shows that \right|
is not supported.
I've made do in this case by using |_{a_2=0}
which produces the following result:
\$s_{11} = {\frac{b_1}{a_1}} |_{a_2=0}\$
It's legible, but the vertical bar is the wrong height. It should match the height of the fraction, but it's just a normal character and does not stretch. I do note that other characters like (
do stretch with \left(
and \right)
:
\$\left(\frac{b_1}{a_1}\right)\$
so perhaps I'm just screwing something up. The MathJax documentation says that \right
is supported, so I think this should work. What am I doing wrong?