<?xml version="1.0" encoding="UTF-8"?>

<!--   Created using wxMaxima 21.02.0-DevelopmentSnapshot   -->
<!--https://wxMaxima-developers.github.io/wxmaxima/-->

<wxMaximaDocument version="1.5" zoom="180" activecell="4">

<cell type="code">
<input>
<editor type="input">
<line>interval(-∞,1);</line>
<line>interval(1,2);</line>
<line>interval(1,∞);</line>
</editor>
</input>
</cell>

<cell type="code">
<input>
<editor type="input">
<line>interval(-∞,1/2);</line>
<line>interval(1/2,2/3);</line>
<line>interval(1/2,∞);</line>
</editor>
</input>
</cell>

<cell type="code">
<input>
<editor type="input">
<line>interval(-∞,1/21334234141124124214124124214214211244211421241214241412412421);</line>
<line>interval(1/2,2/33324123423413214321423422431342243123423123123123124323442132431);</line>
<line>interval(1/21212212132113232121332123123321132231321321231321321321231312321231231,∞);</line>
</editor>
</input>
</cell>

<cell type="code">
<input>
<editor type="input">
<line>interval(-∞,1/2,5);</line>
<line>interval(1/2,2/3,7);</line>
<line>interval(1/2,7,∞);</line>
</editor>
</input>
</cell>

</wxMaximaDocument>