Difference between revisions of "Riemann sum III"

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Line 10: Line 10:
 
</html>
 
</html>
 
<jsxgraph width="800" height="400" box="box">
 
<jsxgraph width="800" height="400" box="box">
var brd = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox:[-8,-40,8,-5], grid:true});
+
var brd = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox:[-8,40,8,-5], grid:true});
 
var s = brd.create('slider',[[1,30],[5,30],[1,10,50]],{name:'n',snapWidth:1});
 
var s = brd.create('slider',[[1,30],[5,30],[1,10,50]],{name:'n',snapWidth:1});
 
var a = brd.create('slider',[[1,20],[5,20],[-10,-3,0]],{name:'start'});
 
var a = brd.create('slider',[[1,20],[5,20],[-10,-3,0]],{name:'start'});
Line 23: Line 23:
 
     ],  
 
     ],  
 
     {fillColor:'#ffff00', fillOpacity:0.3});
 
     {fillColor:'#ffff00', fillOpacity:0.3});
 
+
/*
 
brd.createElement('text',[-6,-4,function(){ return 'Sum='+(brd.riemannsum(f,s.Value(),document.getElementById('sumtype').value,a.Value(),b.Value())).toFixed(4); }]);
 
brd.createElement('text',[-6,-4,function(){ return 'Sum='+(brd.riemannsum(f,s.Value(),document.getElementById('sumtype').value,a.Value(),b.Value())).toFixed(4); }]);
 +
*/
 
</jsxgraph>
 
</jsxgraph>
  
Line 30: Line 31:
 
<source lang="xml">
 
<source lang="xml">
 
<jsxgraph width="800" height="400" box="box">
 
<jsxgraph width="800" height="400" box="box">
JXG.Options.text.useASCIIMathML = true;
 
 
var brd = JXG.JSXGraph.initBoard('box', {axis:true, originX: 400, originY: 200, grid:true, unitX: 50, unitY: 50});
 
var s = brd.createElement('slider',[[1,3],[5,3],[1,10,50]],{name:'n',snapWidth:1});
 
var a = brd.createElement('slider',[[1,2],[5,2],[-10,-3,0]],{name:'start'});
 
var b = brd.createElement('slider',[[1,1],[5,1],[0,Math.PI,10]],{name:'end'});
 
var f = function(x){ return Math.sin(x); };
 
var plot = brd.createElement('functiongraph',[f,function(){return a.Value();}, function(){return b.Value();}]);
 
 
var os = brd.createElement('riemannsum',[f,
 
    function(){ return s.Value();}, function(){ return document.getElementById('sumtype').value;},
 
    function(){return a.Value();},
 
    function(){return b.Value();}
 
    ],
 
    {fillColor:'#ffff00', fillOpacity:0.3});
 
 
brd.createElement('text',[-6,-3,function(){ return 'Sum='+(brd.riemannsum(f,s.Value(),document.getElementById('sumtype').value,a.Value(),b.Value())).toFixed(4); }]);
 
 
brd.create('text',[3,-3,'`sum_(i=0)^n i^2`']);
 
 
</jsxgraph>
 
</jsxgraph>
 
</source>
 
</source>

Revision as of 17:22, 2 February 2010

Riemann sum type:

The underlying JavaScript code

<jsxgraph width="800" height="400" box="box">
</jsxgraph>