Test MathJX
Put your MathJax between <p> .. </p>
to get consistent results
https://github.com/writeas/writefreely/issues/177
More details below:
Works as Expected
<p>
$$
a = \begin{bmatrix}
a{1}\\a{2}\\a{3}\
\end{bmatrix} = \begin{bmatrix} a{1} & a{2} &a{3}\end{bmatrix}
$$
</p>
$$ a = \begin{bmatrix} a{1}\\a{2}\\a{3}\ \end{bmatrix} = \begin{bmatrix} a{1} & a{2} &a{3}\end{bmatrix} $$
Does not work properly without <p>
$$
a = \begin{bmatrix}
a{1}\\a{2}\\a{3}\
\end{bmatrix} = \begin{bmatrix} a{1} & a{2} &a{3}\end{bmatrix}
$$
$$ a = \begin{bmatrix} a{1}\a{2}\a{3}\ \end{bmatrix} = \begin{bmatrix} a{1} & a{2} &a{3}\end{bmatrix} $$
Does not work
$\begin{bmatrix}a_1 & b_1 & c_1 & d^1\end{bmatrix}$
$\begin{bmatrix}a1 & b1 & c_1 & d^1\end{bmatrix}$
Works
<p>
$\begin{bmatrix}a_1 & b_1 & c_1 & d^1\end{bmatrix}$
</p>
$\begin{bmatrix}a_1 & b_1 & c_1 & d^1\end{bmatrix}$
Works
<p>
$$
\begin{bmatrix}
1 & x & x^2 \\
1 & y & y^2 \\
1 & z & z^2 \\
\end{bmatrix} =
$$
</p>
$$ \begin{bmatrix} 1 & x & x^2 \\ 1 & y & y^2 \\ 1 & z & z^2 \\ \end{bmatrix} = $$