Difference between revisions of "Conic sections"

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Line 11: Line 11:
 
var brd2=JXG.JSXGraph.initBoard('jxgbox2',{boundingbox:[-3,3,3,-3], keepaspectration:true});
 
var brd2=JXG.JSXGraph.initBoard('jxgbox2',{boundingbox:[-3,3,3,-3], keepaspectration:true});
  
−
var A = brd2.create('point',[-1,2]);
+
var A = brd2.create('point',[-1,0]);
−
var B = brd2.create('point',[1,2]);
+
var B = brd2.create('point',[1,0]);
 
var s = brd2.create('slider',[[-1,-2],[1,-2],[0,5,10]]);
 
var s = brd2.create('slider',[[-1,-2],[1,-2],[0,5,10]]);
 
var ell = brd2.create('ellipse',[A,B,function(){return s.Value();}]);
 
var ell = brd2.create('ellipse',[A,B,function(){return s.Value();}]);
 +
</jsxgraph>
 +
 +
<jsxgraph width="600" height="400" box="jxgbox3">
 +
var brd3=JXG.JSXGraph.initBoard('jxgbox1',{boundingbox:[-3,3,3,-3], keepaspectration:true});
 +
 +
var A = brd3.create('point',[-1,1]);
 +
var B = brd3.create('point',[1,1]);
 +
var C = brd3.create('point',[0,-1]);
 +
var hyp = brd3.create('hyperbola',[A,B,C]);
 +
</jsxgraph>
 +
 +
<jsxgraph width="600" height="400" box="jxgbox4">
 +
var brd4=JXG.JSXGraph.initBoard('jxgbox2',{boundingbox:[-3,3,3,-3], keepaspectration:true});
 +
 +
var A = brd4.create('point',[-1,0]);
 +
var B = brd4.create('point',[1,0]);
 +
var s = brd4.create('slider',[[-1,-2],[1,-2],[0,5,10]]);
 +
var hyp = brd4.create('hyperbola',[A,B,function(){return s.Value();}]);
 +
</jsxgraph>
 +
 +
<jsxgraph width="600" height="400" box="jxgbox5">
 +
var brd5=JXG.JSXGraph.initBoard('jxgbox1',{boundingbox:[-3,3,3,-3], keepaspectration:true});
 +
 +
var A = brd5.create('point',[-1,1]);
 +
var B = brd5.create('point',[1,1]);
 +
var line = brd5.create('line',[A,B]);
 +
var C = brd5.create('point',[0,-1]);
 +
var hyp = brd5.create('parabola',[line,C]);
 
</jsxgraph>
 
</jsxgraph>

Revision as of 13:59, 21 March 2010

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