loncom/homework/templates/functionplotback.problem - diff

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version 1.1, 2010/11/13 22:30:32	version 1.2, 2010/11/24 02:53:18
Line 4 $y=&random(-3,3,2);	Line 4 $y=&random(-3,3,2);
$a=&random(0.5,0.9,0.1);	$a=&random(0.5,0.9,0.1);
if (&random(0,1,1)) {	if (&random(0,1,1)) {
$function="$a*(x-($x))^2+($y)";	$function="$a*(x-($x))^2+($y)";
	$answer="2$a(x-($x))";
$relation='gt';	$relation='gt';
} else {	} else {
$function="-$a*(x-($x))^2+($y)";	$function="-$a*(x-($x))^2+($y)";
	$answer="-2$a(x-($x))";
$relation='lt';	$relation='lt';
}</script>	}</script>
<startouttext />	<startouttext />
Provide a sketch of the derivative of the indicated function<br /> <endouttext />	Provide a sketch of the derivative of the indicated function<br /> <endouttext />
<functionplotresponse xaxisvisible="yes" xlabel="x" gridvisible="yes" ylabel="y(x)" id="11" xmax="10" yaxisvisible="yes" xmin="-10" ymin="-10" ymax="10">	<functionplotresponse xaxisvisible="yes" xlabel="x" gridvisible="yes" ylabel="y(x)" id="11" xmax="10" yaxisvisible="yes" xmin="-10" ymin="-10" ymax="10" answerdisplay="$answer">
<functionplotelements>	<functionplotelements>
<spline initx="-4" inity="0" index="A" order="3" scalex="8" />	<spline initx="-4" inity="0" index="A" order="3" scalex="8" />
<backgroundplot function="$function" fixed="yes" />	<backgroundplot function="$function" fixed="yes" />