** Using WeBWorK **

I did try including that snippet to inject the GeoGebra applet into the problem and it didn't seem to work. Below is the code with the change bold. Before the change, that bold snippet was:

TEXT($PAR, MODES(TeX=>$im,

HTML=>$applet->insertAll(

debug =>0,

reinitialize_button => 0,

includeAnswerBox=>1,

)));

########################################################################

DOCUMENT();

loadMacros(

"PGstandard.pl", # Standard macros for PG language

"MathObjects.pl",

"PGgraphmacros.pl",

"AppletObjects.pl",

"parserImplicitEquation.pl",

"source.pl",

);

# Print problem number and point value (weight) for the problem

TEXT(beginproblem());

# Show which answers are correct and which ones are incorrect

$showPartialCorrectAnswers = 1;

##############################################################

#

# Setup

#

#

Context("ImplicitEquation");

Context()->variables->are(x=>["Real", limits=>[-8,8]], y=>["Real", limits=>[-8,8]]);

Context()->noreduce('(-x)-y');

$a = non_zero_random(-3,7,1);

do{ $b = non_zero_random(-5,5,1); } until ( $a != 1 || $b != 1 );

$c = $a*$b;

$f = Formula("$b x+$a y")->reduce;

$answer = ImplicitEquation("$f = $c");

######################################

# Create link to applet:

###################################

# You can name your applet (anything reasonable :-) )

# Adjust the height and width as desired

# Paste the geogebra parameters in at the bottom of the page just above the

# command end command

# so that they don't get in the way

###################################

$appletName = "ggbfoo";

$applet = GeogebraWebApplet(

code => "geogebra.GeoGebraApplet",

archive => "geogebra.jar",

codebase => findAppletCodebase("geogebra.jar"),

appletName => $appletName,

appletId => $appletName,

submitActionAlias => 'getAppletValues', # default actionAlias

initializeActionAlias => 'configure', # default actionAlias

setStateAlias => 'setXML',

getStateAlias => 'getXML',

setConfigAlias => '',

getConfigAlias => '',

returnFieldName => '',

width => 400, # may want to modify width

height => 400, # may want to modify height

# mayscript => "true",

debugMode => 0, # set debugMode to 0 for no debug

# to 1 to make xml representation visible

# to 2 to add alerts detailing progression

# through the applet

onInit => 'ggbOnInit',

type => 'geogebraweb',

submitActionScript => qq{ getQE('answerBox').value = getAppletValues() },

#submitActionScript => '',

selfLoading => 1,

params => GEOGEBRA_PARAMS(),# paste parameters in

);

###############################################

#

# PNG picture of GeoGebra applet for hardcopy

$im = init_graph(-8,-8,8,8,

size=>[400,400],

grid=>[16,16],

axes=>[0,0]

);

##################################

# Setup GeogebraWebApplet --

###################################

###############################################

#

# For persistence of GeoGebra applet state

# when answers are submitted or page is refreshed.

# Uses JavaScript interface to GeoGebra.

HEADER_TEXT(

qq!

<script language="javascript">

function ggbOnInit(param) {</div> <div> if (param == "$appletName") {</div> <div> applet_loaded(param,1); // report that applet is ready. </div> <div> ww_applet_list[param].safe_applet_initialize(2);</div> <div> }

}

</script>

<noscript>For this question to work properly,

you must enable JavaScript, or use another browser

(or computer) on which JavaScript works.</noscript>

!);

#######################################################

#

# For setting initial values in GeoGebra from WeBWorK

# Uses JavaScript interface to GeoGebra.

TEXT( MODES(TeX=>'', HTML=><<END_SCRIPT ) );

<script language="javascript">

function setAppletCoefficients() {</div> <div> var applet=getApplet("$appletName"); // alert("Updating coefficients");</div> <div> if (typeof(applet)!="undefined") {</div> <div> if (typeof(applet.setValue)!="undefined") {</div> <div> </div> <div> ////////////////////////////////////////////////////////////////</div> <div> // List the values of the parameters to be set in the applet here</div> <div> // Setup the grid, then establish values, points, then the line</div> <div><br /></div> <div> applet.setPerspective("G");</div> <div> applet.setPointCapture(1,2);</div> <div> applet.setCoordSystem(-8,8,-8,8);</div> <div> applet.setAxisSteps(1,1,1);</div> <div> applet.setGridVisible('true');</div> <div><br /></div> <div> applet.evalCommand("a = 1");</div> <div> applet.evalCommand("b = 1");</div> <div> applet.evalCommand("A = (a,0)");</div> <div> applet.evalCommand("B = (0,b)");</div> <div> applet.evalCommand("l = Line[A,B]");</div> <div><br /></div> <div> //applet.setColor('A',228,27,23);</div> <div> //applet.setColor('B',228,27,23);</div> <div> //applet.setColor('l',228,27,23);</div> <div><br /></div> <div><br /></div> <div> } else {</div> <div> setTimeout("setAppletCoefficients()", 1000);</div> <div> }

} else {</div> <div> setTimeout("setAppletCoefficients()",1000);</div> <div> }

}

ww_applet_list["$appletName"].setConfig = function() {setAppletCoefficients()};

</script>

END_SCRIPT

#######################################################

#

# For retrieving values from GeoGebra into WeBWorK

#

HEADER_TEXT( MODES(TeX=>'', HTML=><<END_SCRIPT ) );

<script language="javascript">

function getAppletValues() {</div> <div> console.log("getAppletValues() entered");</div> <div><span style="white-space:pre;"> </span>// get a handle for the applet object</div> <div> <span style="white-space:pre;"> </span>var applet = $appletName;</div> <div> <span style="white-space:pre;"> </span>var l = applet.getLaTeXString("l");</div> <div> return( l ); </div> <div>}

</script>

END_SCRIPT

##############################################################

#

# Text

#

#

Context()->texStrings;

BEGIN_TEXT

Graph the line, and submit your answer.

END_TEXT

Context()->normalStrings;

###################################

# insert applet into body -- this does not need to be changed

# except to adjust the insertion of the reinitialize_button or

# a hidden AnswerBox

###################################

##############################################################

#

# Answers

#

#

NAMED_ANS( 'answerBox' => $answer->cmp() );

sub GEOGEBRA_PARAMS {</div> <div> my $result = {</div> <div> appName=>"classic", # instead of using ggbbase64</div> <div> enableShiftDragZoom=>"false",</div> <div> showResetIcon=>"false" ,</div> <div> enableRightClick=>"false" ,</div> <div> enableLabelDrags=>"false",</div> <div> showMenuBar=>"false" ,</div> <div> showToolBar=>"false",</div> <div> showAlgebraInput=>"false",</div> <div> useBrowserForJS=>"true",</div> <div> #ggbbase64=>''</div> <div>};

$result;

}

ENDDOCUMENT();