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| <html> | | <html> |
| <form>Riemann sum type: <select id="sumtype">
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| <option value='left' selected> left
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| <option value='right'> right
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| <option value='middle'> middle
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| <option value='trapezodial'> trapezodial
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| <option value='lower'> lower
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| <option value='upper'> upper
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| </select></form>
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| </html>
| |
| <jsxgraph width="800" height="400" box="box"> | | <jsxgraph width="800" height="400" box="box"> |
| var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 400, originY: 200, grid:true, unitX: 50, unitY: 50}); | | var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 400, originY: 200, grid:true, unitX: 50, unitY: 50}); |
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| </source> | | </source> |
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| |
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| | </html> |
| [[Category:Examples]] | | [[Category:Examples]] |
| [[Category:Calculus]] | | [[Category:Calculus]] |
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 400, originY: 200, grid:true, unitX: 50, unitY: 50});
brd.createElement('axis', [[0,0], [1,0]], {strokeColor:'black'});
brd.createElement('axis', [[0,0], [0,1]], {strokeColor:'black'});
var b = brd.createElement('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.createElement('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'});
var g = brd.D(f);
var plot2 = brd.createElement('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'});
var os = brd.createElement('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'});
var t1 = brd.createElement('text',[-7,2,"(a*sin(x))'"],{strokeColor:'#9370DB'});
var t2 = brd.createElement('text',[-7,-1.5,"a*sin(x)"],{strokeColor:'#32CD32'});
===The underlying JavaScript code===
var brd = JXG.JSXGraph.initBoard('jxgbox', {originX: 400, originY: 200, grid:true, unitX: 50, unitY: 50});
brd.createElement('axis', [[0,0], [1,0]], {strokeColor:'black'});
brd.createElement('axis', [[0,0], [0,1]], {strokeColor:'black'});
var b = brd.createElement('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.createElement('functiongraph',[f,-7,7], {strokeColor:'#32CD32', strokeWidth:'4px'});
var g = brd.D(f);
var plot2 = brd.createElement('functiongraph',[g,-7,7], {strokeColor:'#9370DB', strokeWidth:'2px'});
var os = brd.createElement('riemannsum',[f, 35, 'middle', -7, 7], {fillColor:'#B22222', fillOpacity:0.3, strokeColor:'#8B1A1A', strokeWidth:'2px'});
var t1 = brd.createElement('text',[-7,2,"(a*sin(x))'"],{strokeColor:'#9370DB'});
var t2 = brd.createElement('text',[-7,-1.5,"a*sin(x)"],{strokeColor:'#32CD32'});
