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File:  [LON-CAPA] / loncom / homework / templates / functionplotback.problem
Revision 1.2: download - view: text, annotated - select for diffs
Wed Nov 24 02:53:18 2010 UTC (14 years, 1 month ago) by www
Branches: MAIN
CVS tags: version_2_12_X, version_2_11_X, version_2_11_5_msu, version_2_11_5, version_2_11_4_uiuc, version_2_11_4_msu, version_2_11_4, version_2_11_3_uiuc, version_2_11_3_msu, version_2_11_3, version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, loncapaMITrelate_1, loncapaMITrelate, language_hyphenation_merge, language_hyphenation, HEAD, BZ4492-merge, BZ4492-feature_horizontal_radioresponse, BZ4492-feature_Support_horizontal_radioresponse, BZ4492-Support_horizontal_radioresponse
Show answer functionality

<problem>
<script type="loncapa/perl">$x=&random(-5,5,2);
$y=&random(-3,3,2);
$a=&random(0.5,0.9,0.1);
if (&random(0,1,1)) {
   $function="$a*(x-($x))^2+($y)";
   $answer="2*$a*(x-($x))";
   $relation='gt';
} else {
   $function="-$a*(x-($x))^2+($y)";
   $answer="-2*$a*(x-($x))";
   $relation='lt';
}</script>
<startouttext />
Provide a sketch of the derivative of the indicated function<br /> <endouttext />
<functionplotresponse xaxisvisible="yes" xlabel="x" gridvisible="yes" ylabel="y(x)" id="11" xmax="10" yaxisvisible="yes" xmin="-10" ymin="-10" ymax="10" answerdisplay="$answer">
<functionplotelements>
<spline initx="-4" inity="0" index="A" order="3" scalex="8" />
<backgroundplot function="$function" fixed="yes" />
</functionplotelements>
<functionplotruleset>
<functionplotrule relationship="eq" xinitial="$x" value="0" derivativeorder="0" percenterror="2" index="extreme" />
<functionplotrule relationship="$relation" xinitiallabel="start" xfinallabel="end" value="0" derivativeorder="1" percenterror="10" index="slope" />
<functionplotrule relationship="eq" xinitiallabel="start" xfinallabel="end" value="0" derivativeorder="2" percenterror="50" index="linear" />
</functionplotruleset>
</functionplotresponse>
</problem>
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