Riemann sum II: Difference between revisions
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<jsxgraph width="800" height="400" box="box"> | <jsxgraph width="800" height="400" box="box"> | ||
var brd = JXG.JSXGraph.initBoard('box', { | var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-8, 4, 8, -4], axis: true}); | ||
var b = brd.create('slider',[[1,3.5],[5,3.5],[0,1,3]],{name:'a', strokeColor:'black', fillColor:'white'}); | var b = brd.create('slider',[[1,3.5],[5,3.5],[0,1,3]],{name:'a', strokeColor:'black', fillColor:'white'}); | ||
var f = function(x){ return b.Value()*Math.sin(x); } | var f = function(x){ return b.Value()*Math.sin(x); } | ||
var plot = brd.create('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'}); | var plot = brd.create('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'}); | ||
var g = | var g = JXG.Math.Numerics.D(f); | ||
var plot2 = brd.create('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'}); | var plot2 = brd.create('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'}); | ||
var os = brd.create('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'}); | var os = brd.create('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'}); | ||
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===The underlying JavaScript code=== | ===The underlying JavaScript code=== | ||
<source lang=" | <source lang="javascript"> | ||
var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-8, 4, 8, -4]}); | |||
var brd = JXG.JSXGraph.initBoard('box', { | |||
var b = brd.create('slider',[[1,3.5],[5,3.5],[0,1,3]],{name:'a', strokeColor:'black', fillColor:'white'}); | var b = brd.create('slider',[[1,3.5],[5,3.5],[0,1,3]],{name:'a', strokeColor:'black', fillColor:'white'}); | ||
var f = function(x){ return b.Value()*Math.sin(x); } | var f = function(x){ return b.Value()*Math.sin(x); } | ||
var plot = brd.create('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'}); | var plot = brd.create('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'}); | ||
var g = | var g = JXG.Math.Numerics.D(f); | ||
var plot2 = brd.create('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'}); | var plot2 = brd.create('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'}); | ||
var os = brd.create('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'}); | var os = brd.create('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'}); | ||
var t1 = brd.create('text',[-7,2,"(a*sin(x))'"],{strokeColor:'#9370DB'}); | var t1 = brd.create('text',[-7,2,"(a*sin(x))'"],{strokeColor:'#9370DB'}); | ||
var t2 = brd.create('text',[-7,-1.5,"a*sin(x)"],{strokeColor:'#32CD32'}); | var t2 = brd.create('text',[-7,-1.5,"a*sin(x)"],{strokeColor:'#32CD32'}); | ||
</source> | </source> | ||
[[Category:Examples]] | [[Category:Examples]] | ||
[[Category:Calculus]] | [[Category:Calculus]] | ||
Latest revision as of 15:50, 20 February 2013
The underlying JavaScript code
var brd = JXG.JSXGraph.initBoard('box', {boundingbox: [-8, 4, 8, -4]});
var b = brd.create('slider',[[1,3.5],[5,3.5],[0,1,3]],{name:'a', strokeColor:'black', fillColor:'white'});
var f = function(x){ return b.Value()*Math.sin(x); }
var plot = brd.create('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'});
var g = JXG.Math.Numerics.D(f);
var plot2 = brd.create('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'});
var os = brd.create('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'});
var t1 = brd.create('text',[-7,2,"(a*sin(x))'"],{strokeColor:'#9370DB'});
var t2 = brd.create('text',[-7,-1.5,"a*sin(x)"],{strokeColor:'#32CD32'});
