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# Visualization If and Else

In the \text command you can use \IF{condition}{text} and \IFELSE{condition}{text}{othertext} to write text which will only be visible if a certain condition holds.

It's possible to ask for two conditions by combining them with the command AND: \IF{condition1 AND condition2}{text}

12345678\begin{genericVisualization}[100prc]{applet}\begin{variables}  \number[editable]{a}{real}{1}  \number[editable]{b}{real}{2}  \number{adivb}{real}{var(a)/var(b)}\end{variables}...\text{\IFELSE{b=0}{\infinity}{\var{adivb}}} 

The condition can be a logical composition of elementary conditions:

123456789101112131415\usepackage{mumie.genericvisualization} \lang{de}{\title{Titel}} \lang{de}{Freier Text} \begin{visualizationwrapper}\begin{genericVisualization}[100prc]{applet}  \begin{variables}    \randint{a}{-5}{5}  \end{variables}\text{\IFELSE{var(a)>0 AND var(a)<0}{Ist wahr}{Es ist nicht wahr }} \end{genericVisualization}\end{visualizationwrapper} 

The syntax used for condition is similar to the condition syntax of \randadjustIf.

It is also possible to combine multiple \IFELSE as in the following example

1234567891011121314151617181920\begin{genericVisualization}[100prc]{applet}\begin{variables}  \number[editable]{a1}{real}{1}  \number[editable]{b1}{real}{2}  \number[editable]{c1}{real}{3}  \number[editable]{a2}{real}{4}  \number[editable]{b2}{real}{5}  \number[editable]{c2}{real}{6}\end{variables}...\text[c]{\begin{align}\var{a1}x &+& \var{b1}y &=& \var{c1}\\\var{a2}x &+& \var{b2}y &=& \var{c2} \end{align}} % display linear equation system\text[c]{  \IFELSE{(a1/a2) = (b1/b2)}  {     \IFELSE{(a1/a2) = (c1/c2)}     {The above equation system has infinite number of solutions.}     {The above equation system has no solution.}  }  {The above equation system has exactly one solution.}}