Difference between revisions of "Matrix multiplication"

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<html>
 
<html>
 
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
 
<link rel="stylesheet" type="text/css" href="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraph.css" />
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/prototype.js"></script>
 
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
 
<script type="text/javascript" src="http://jsxgraph.uni-bayreuth.de/distrib/jsxgraphcore.js"></script>
 
<div id="box1" class="jxgbox" style="width:400px; height:300px; float:left;"></div>
 
<div id="box1" class="jxgbox" style="width:400px; height:300px; float:left;"></div>

Revision as of 19:13, 29 October 2009


References

The underlying JavaScript code

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  b1.suspendUpdate();
  b1.createElement('axis', [[0,0], [1,0]], {});
  b1.createElement('axis', [[0,0], [0,1]], {});
  a = b1.createElement('slider',[[-5,-2],[5,-2],[-5,1,5]],{name:'a'});
  b = b1.createElement('slider',[[-5,-3],[5,-3],[-5,0,5]],{name:'b'});
  c = b1.createElement('slider',[[-5,-4],[5,-4],[-5,0,5]],{name:'c'});
  d = b1.createElement('slider',[[-5,-5],[5,-5],[-5,1,5]],{name:'d'});

  v = b1.createElement('point',[2,2],{style:5,name:'v'});
  w = b1.createElement('point',[-2,1],{style:5,name:'w'});
  va = b1.createElement('line',[[0,0],v],{straightFirst:false, straightLast:false, lastArrow:true});
  wa = b1.createElement('line',[[0,0],w],{straightFirst:false, straightLast:false, lastArrow:true});
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  b2 = JXG.JSXGraph.initBoard('box2', {originX: 150, originY: 150, unitX: 20, unitY: 20});
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  b2.createElement('axis', [[0,0], [1,0]], {});
  b2.createElement('axis', [[0,0], [0,1]], {});

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       function() {return a.Value()*v.X()+b.Value()*v.Y();},
       function() {return c.Value()*v.X()+d.Value()*v.Y();}],{style:7,name:"v'"});
  w2 = b2.createElement('point',[
       function() {return a.Value()*w.X()+b.Value()*w.Y();},
       function() {return c.Value()*w.X()+d.Value()*w.Y();}],{style:7,name:"w'"});
  va2 = b2.createElement('line',[[0,0],v2],{straightFirst:false, straightLast:false, lastArrow:true});
  wa2 = b2.createElement('line',[[0,0],w2],{straightFirst:false, straightLast:false, lastArrow:true});
  t = b2.createElement('text',[-6,-2,function(){ return '|'+b2.round(a.Value(),2)+' '+b2.round(b.Value(),2)+'|'+'<br>'+'|'+b2.round(c.Value(),2)+' '+b2.round(d.Value(),2)+'|';}]);
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