Riemann sums: Difference between revisions
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A WASSERMANN (talk | contribs) No edit summary |
A WASSERMANN (talk | contribs) No edit summary |
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</html> | </html> | ||
<html> | <html> | ||
<form>Riemann sum type: <select id="sumtype" onChange=" | <form>Riemann sum type: <select id="sumtype" onChange="brd.update();"> | ||
<option value='left' selected> left | <option value='left' selected> left | ||
<option value='right'> right | <option value='right'> right | ||
Latest revision as of 13:50, 7 March 2024
The underlying JavaScript code
var brd = JXG.JSXGraph.initBoard('box', {axis:true, boundingbox: [-8, 4, 8, -4]});
var s = brd.create('slider',[[1,3],[5,3],[1,10,50]],{name:'n',snapWidth:1});
var a = brd.create('slider',[[1,2],[5,2],[-10,-3,0]],{name:'start'});
var b = brd.create('slider',[[1,1],[5,1],[0,Math.PI,10]],{name:'end'});
var f = function(x){ return Math.sin(x); };
var plot = brd.create('functiongraph',[f,function(){return a.Value();}, function(){return b.Value();}]);
var os = brd.create('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.create('text',[-6,-3,function(){ return 'Sum='+(JXG.Math.Numerics.riemannsum(f,s.Value(),document.getElementById('sumtype').value,a.Value(),b.Value())).toFixed(4); }]);
