--- loncom/html/adm/help/tex/Calling_Functions.tex 2005/03/24 16:22:36 1.4 +++ loncom/html/adm/help/tex/Calling_Functions.tex 2013/07/05 18:30:40 1.7 @@ -4,25 +4,23 @@ With variables, you can store strings or you to manipulate these strings or numbers. Functions work like mathematical functions: They take some number of arguments in, and return one argument, usually a number or a string for our purposes. There are a lot of functions -available in LON-CAPA. You can see a complete list at -\ref{all_functions_table}. +available in LON-CAPA. You can see a complete list in the Script section +\ref{Script_Functions} and LON-CAPA function section \ref{Problem_LON-CAPA_Functions}. For now, let's just look at some simple examples. % \begin{figure} -\begin{lyxcode} \$a~=~-3.0; \$b~=~\&sin(\$a); \$c~=~\&pow(3.0,~\&abs(\$a)); -\end{lyxcode} \caption{Some Function Calls\label{Some Function Calls Figure}} \end{figure} In the \textbf{Script} block, function names start with \textbf{\&}. Some -example function calls are shown in figure \ref{Some Function Calls Figure}. +example function calls are shown above. You can see that functions can take either variables, numbers, or the results of other function calls as parameters. The \texttt{\&sin} function returns the sine of an angle expressed in radians. \texttt{\&pow} raises the first