Riemann integrability: Difference between revisions

Revision as of 12:40, 11 May 2010

@@ Line 2: / Line 2: @@
 var brd = JXG.JSXGraph.initBoard('box', {boundingbox:[-3,4,3,-4],axis:true});
 var p = [];
-p.push(brd.create('point',[-2,(Math.random()-0.5)*5]));
+p.push(brd.create('point',[-2.7,(Math.random()-0.5)*5]));
 p.push(brd.create('point',[-1,(Math.random()-0.5)*5]));
 p.push(brd.create('point',[0,(Math.random()-0.5)*5]));
 p.push(brd.create('point',[1,(Math.random()-0.5)*5]));
-p.push(brd.create('point',[2,(Math.random()-0.5)*5]));
+p.push(brd.create('point',[2.7,(Math.random()-0.5)*5]));
 var f = brd.lagrangePolynomial(p);
@@ Line 12: / Line 12: @@
 var plot = brd.create('functiongraph',[f,-3,3]);
-var os = brd.createElement('riemannsum',[f,
+var up = brd.createElement('riemannsum',[f,function(){ return n.Value();}, 'upper',-3,3],{fillColor:'#ff0000', fillOpacity:0.3});
-    function(){ return n.Value();}, 'upper',
+var lo = brd.createElement('riemannsum',[f,function(){ return n.Value();}, 'lower',-3,3],{fillColor:'#ffff00', fillOpacity:0.3});
-    -3,3],
-    {fillColor:'#ffff00', fillOpacity:0.3});
 /*