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Annotation of loncom/homework/templates/functionplottwo.problem, revision 1.2

1.1       www         1: <problem>
                      2: <script type="loncapa/perl">$x=&random(5,10,1);</script>
                      3: <startouttext />
                      4: Make a sketch of the electrostatic potential (zero at infinity) of a negative point charge located at x=$x m.
                      5: <endouttext />
                      6: <functionplotresponse xaxisvisible="yes" xlabel="x [m]" gridvisible="yes" ylabel="V(x) [V]" id="11" xmax="30" yaxisvisible="yes" xmin="-4" ymin="-10" ymax="10">
1.2     ! www         7: <functionplotelements>
1.1       www         8: <spline initx="-2" inity="0" index="A" order="2" scalex="4" />
                      9: <spline index="B" order="2" initx="12" inity="0" scalex="4" />
1.2     ! www        10: </functionplotelements>
        !            11: <functionplotruleset>
        !            12: <functionplotrule relationship="eq" value="undef" derivative="0" xinitial="$x" index="chargeposition" derivativeorder="0" />
1.1       www        13: <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="start" xfinallabel="chargeleft" />
                     14: <functionplotrule relationship="lt" value="0" derivativeorder="1" xinitiallabel="start" xfinallabel="chargeleft" />
                     15: <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="start" xfinallabel="chargeleft" />
                     16: <functionplotrule relationship="eq" xinitiallabel="chargeleft" xfinallabel="chargeright" value="undef" derivativeorder="0" />
                     17: <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="chargeright" xfinallabel="end" />
                     18: <functionplotrule relationship="gt" value="0" derivativeorder="1" xinitiallabel="chargeright" xfinallabel="end" />
                     19: <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="chargeright" xfinallabel="end" />
1.2     ! www        20: </functionplotruleset>
        !            21: 
        !            22: <hintgroup showoncorrect="no">
        !            23: <hintpart on="chargeposition">
        !            24: <startouttext />The charge is not in the correct position.<endouttext />
        !            25: </hintpart>
        !            26: </hintgroup>
1.1       www        27: </functionplotresponse>
                     28: </problem>