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$math text$$
text
must be a
delimiter sequence
.
text
are output in a
preformatted font
.
This enables you to line up one equation above another.
$math%x * y%$$
results in the output
x * y
\ge 

\ge 
\le 

\le 
\\ 

\\

$math%\int f(x) dx \le 1%$$
results in the following output
\int f(x) dx \le 1
$math%
x * z = 1
y = 2
%$$
would result in:
x * z = 1
y = 2
$math%
% \minimize f(x)
\subject \to g(x) <= 0
%$$
would result in:
\minimize f(x)
\subject \to g(x) <= 0
$escape #$$
$math%
/ 1 0 0 \
 0 1 0 
\ 0 0 1 /
%$$
produces the following output
/ 1 0 0 \
 0 1 0 
\ 0 0 1 /