loncom/homework/templates/functionplottwo.problem - view

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CVS tags: 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

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<problem> <script type="loncapa/perl">$x=&random(5,10,1);</script> <startouttext /> Make a sketch of the electrostatic potential (zero at infinity) of a negative point charge located at x=$x m. <endouttext /> <functionplotresponse xaxisvisible="yes" xlabel="x [m]" gridvisible="yes" ylabel="V(x) [V]" id="11" xmax="30" yaxisvisible="yes" xmin="-4" ymin="-10" ymax="10" answerdisplay="-4/abs(x-$x)"> <functionplotelements> <spline initx="-2" inity="0" index="A" order="2" scalex="4" /> <spline index="B" order="2" initx="12" inity="0" scalex="4" /> </functionplotelements> <functionplotruleset> <functionplotrule relationship="eq" value="undef" derivative="0" xinitial="$x" index="chargeposition" derivativeorder="0" /> <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="start" xfinallabel="chargeleft" index="negleft" /> <functionplotrule relationship="lt" value="0" derivativeorder="1" xinitiallabel="start" xfinallabel="chargeleft" /> <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="start" xfinallabel="chargeleft" percentageerror="20" /> <functionplotrule relationship="eq" xinitiallabel="chargeleft" xfinallabel="chargeright" value="undef" derivativeorder="0" /> <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="chargeright" xfinallabel="end" index="negright" /> <functionplotrule relationship="gt" value="0" derivativeorder="1" xinitiallabel="chargeright" xfinallabel="end" /> <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="chargeright" xfinallabel="end" percentageerror="20" /> </functionplotruleset> <hintgroup showoncorrect="no"> <hintpart on="chargeposition"> <startouttext />The charge is not in the correct position.<endouttext /> </hintpart> <hintpart on="negleft"> <startouttext />The potential is zero at negative infinity, and the charge is negative.<endouttext /> </hintpart> <hintpart on="negright"> <startouttext />The potential is zero at positive infinity, and the charge is negative.<endouttext /> </hintpart> </hintgroup> </functionplotresponse> </problem>