--- loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2006/07/18 15:26:41	1.8
+++ loncom/html/adm/help/tex/Problem_LON-CAPA_Functions.tex	2007/05/24 06:45:57	1.9
@@ -57,6 +57,9 @@ erf = 2/sqrt(pi) integral (0,x) et-sq an
 \&roundto(\$x,\$n)  & Rounds a real number to n decimal points. \$x and \$n can be pure numbers \\
 \hline
  
+&\&cas(\$s,\$e)&Evaluates the expression \$e inside the symbolic algebra system \$s. Currently, only the Maxima symbolic math system is implemented. Example: \&cas('maxima','6*7')&\\ 
+\hline 
+
 \&web(``a'',''b'',''c'') or \&web(\$a,\$b,\$c)  & Returns either a, b or c depending on the output medium. a is for plain ASCII, b for tex output and c for html output \\
 \hline