File:
[LON-CAPA] /
loncom /
homework /
templates /
functionplottwo.problem
Revision
1.4:
download - view:
text,
annotated -
select for diffs
Wed Nov 24 02:53:18 2010 UTC (13 years, 8 months ago) by
www
Branches:
MAIN
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
Show answer functionality
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" answerdisplay="-4/abs(x-$x)">
7: <functionplotelements>
8: <spline initx="-2" inity="0" index="A" order="2" scalex="4" />
9: <spline index="B" order="2" initx="12" inity="0" scalex="4" />
10: </functionplotelements>
11: <functionplotruleset>
12: <functionplotrule relationship="eq" value="undef" derivative="0" xinitial="$x" index="chargeposition" derivativeorder="0" />
13: <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="start" xfinallabel="chargeleft" index="negleft" />
14: <functionplotrule relationship="lt" value="0" derivativeorder="1" xinitiallabel="start" xfinallabel="chargeleft" />
15: <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="start" xfinallabel="chargeleft" percentageerror="20" />
16: <functionplotrule relationship="eq" xinitiallabel="chargeleft" xfinallabel="chargeright" value="undef" derivativeorder="0" />
17: <functionplotrule relationship="lt" value="0" derivativeorder="0" xinitiallabel="chargeright" xfinallabel="end" index="negright" />
18: <functionplotrule relationship="gt" value="0" derivativeorder="1" xinitiallabel="chargeright" xfinallabel="end" />
19: <functionplotrule relationship="le" value="0" derivativeorder="2" xinitiallabel="chargeright" xfinallabel="end" percentageerror="20" />
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: <hintpart on="negleft">
27: <startouttext />The potential is zero at negative infinity, and the charge is negative.<endouttext />
28: </hintpart>
29: <hintpart on="negright">
30: <startouttext />The potential is zero at positive infinity, and the charge is negative.<endouttext />
31: </hintpart>
32: </hintgroup>
33: </functionplotresponse>
34: </problem>
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>