Parabola II - Revision history

A WASSERMANN at 09:26, 29 June 2021

2021-06-29T09:26:03Z

← Older revision		Revision as of 09:26, 29 June 2021
Line 30:		Line 30:

	var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});		var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});
	var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"c"});		var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"-c"});
	var l = board.create('parallel', [board.defaultAxes.y, c], {name:"l", withLabel:true});		var l = board.create('parallel', [board.defaultAxes.y, c], {name:"l", withLabel:true});

	var par = board.create('parabola', [f, l]);		var par = board.create('parabola', [f, l]);

	var P = board.create('glider', [2, 2, par], {name: 'P'});		var P = board.create('glider', [2, 2, par], {name: 'p'});
	var s1 = board.create('segment', [f,P]);		var s1 = board.create('segment', [f,P]);

Line 41:		Line 41:
	var s2 = board.create('segment', [q, P]);		var s2 = board.create('segment', [q, P]);

	var txt = board.create('text', [0.2, 4, () => "\|Pf\| - \|Pq\| = " + P.Dist(f).toFixed(2) + ' - ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);		var txt = board.create('text', [0.2, 4, () => "\|pf\| - \|pq\| = " + P.Dist(f).toFixed(2) + ' - ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);
	</source>		</source>
	[[Category:Examples]]		[[Category:Examples]]
	[[Category:Geometry]]		[[Category:Geometry]]

A WASSERMANN at 09:24, 29 June 2021

2021-06-29T09:24:56Z

← Older revision		Revision as of 09:24, 29 June 2021
Line 7:		Line 7:

	var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});		var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});
	var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"c"});		var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"-c"});
	var l = board.create('parallel', [board.defaultAxes.y, c], {name:"l", withLabel:true});		var l = board.create('parallel', [board.defaultAxes.y, c], {name:"l", withLabel:true});

	var par = board.create('parabola', [f, l]);		var par = board.create('parabola', [f, l]);

	var P = board.create('glider', [2, 2, par], {name: 'P'});		var P = board.create('glider', [2, 2, par], {name: 'p'});
	var s1 = board.create('segment', [f,P]);		var s1 = board.create('segment', [f,P]);

Line 18:		Line 18:
	var s2 = board.create('segment', [q, P]);		var s2 = board.create('segment', [q, P]);

	var txt = board.create('text', [0.2, 4, () => "\|Pf\| - \|Pq\| = " + P.Dist(f).toFixed(2) + ' - ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);		var txt = board.create('text', [0.2, 4, () => "\|pf\| - \|pq\| = " + P.Dist(f).toFixed(2) + ' - ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);
	</jsxgraph>		</jsxgraph>

A WASSERMANN at 13:04, 28 June 2021

2021-06-28T13:04:14Z

@@ Line 19: / Line 19: @@
 var txt = board.create('text', [0.2, 4, () => "|Pf| - |Pq| = " + P.Dist(f).toFixed(2) + ' - ' +  P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);
 </jsxgraph>
 === The underlying JavaScript code ===
 <source lang="javascript">
 </source>
 [[Category:Examples]]
 [[Category:Geometry]]

A WASSERMANN at 13:03, 28 June 2021

2021-06-28T13:03:45Z

← Older revision		Revision as of 13:03, 28 June 2021
Line 18:		Line 18:
	var s2 = board.create('segment', [q, P]);		var s2 = board.create('segment', [q, P]);

	var txt = board.create('text', [0.2, 4, () => "\|Pf\| + \|Pq\| = " + P.Dist(f).toFixed(2) + ' + ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) + P.Dist(q)).toFixed(2)]);		var txt = board.create('text', [0.2, 4, () => "\|Pf\| - \|Pq\| = " + P.Dist(f).toFixed(2) + ' - ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) - P.Dist(q)).toFixed(2)]);

	</jsxgraph>		</jsxgraph>

A WASSERMANN at 13:02, 28 June 2021

2021-06-28T13:02:37Z

← Older revision		Revision as of 13:02, 28 June 2021
Line 12:		Line 12:
	var par = board.create('parabola', [f, l]);		var par = board.create('parabola', [f, l]);

	var P = board.create('glider', [-1, 2, par], {name: 'P'});		var P = board.create('glider', [2, 2, par], {name: 'P'});
	var s1 = board.create('segment', [f,P]);		var s1 = board.create('segment', [f,P]);
	~~//var s2 = board.create('segment', [f2,P]);~~

	//var txt = board.create('text', [0.2, 4, () => "\|Pf\| + \|~~Pf'~~\| = " + P.Dist(f1).toFixed(2) + ' + ' + P.Dist(f2).toFixed(2) + ' = ' + (P.Dist(f1) + P.Dist(f2)).toFixed(2)]);		var q = board.create('point', [()=>c.X(), ()=>P.Y()], {name:'q'});
			var s2 = board.create('segment', [q, P]);

			var txt = board.create('text', [0.2, 4, () => "\|Pf\| + \|Pq\| = " + P.Dist(f).toFixed(2) + ' + ' + P.Dist(q).toFixed(2) + ' = ' + (P.Dist(f) + P.Dist(q)).toFixed(2)]);

	</jsxgraph>		</jsxgraph>

A WASSERMANN at 12:59, 28 June 2021

2021-06-28T12:59:52Z

← Older revision		Revision as of 12:59, 28 June 2021
Line 8:		Line 8:
	var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});		var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});
	var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"c"});		var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"c"});
	var l = board.create('parallel', [board.defaultAxes.c], {name:"l", withLabel:true});		var l = board.create('parallel', [board.defaultAxes.y, c], {name:"l", withLabel:true});

	var par = board.create('parabola', [f, l]);		var par = board.create('parabola', [f, l]);

A WASSERMANN: Created page with " JXG.Options.label.autoPosition = true; JXG.Options.text.fontSize = 16; JXG.Options.line.strokeWidth = 0.8; var board = JXG.JSXGraph.initBo..."

2021-06-28T12:59:35Z

Created page with "<jsxgraph width="500" height="500"> JXG.Options.label.autoPosition = true; JXG.Options.text.fontSize = 16; JXG.Options.line.strokeWidth = 0.8; var board = JXG.JSXGraph.initBo..."

New page

<jsxgraph width="500" height="500">
JXG.Options.label.autoPosition = true;
JXG.Options.text.fontSize = 16;
JXG.Options.line.strokeWidth = 0.8;

var board = JXG.JSXGraph.initBoard('jxgbox', { boundingbox: [-5, 5, 5, -5], axis: true, showClearTraces: true});

var f = board.create('glider', [1, 0, board.defaultAxes.x], {name:"f"});
var c = board.create('glider', [-1, 0, board.defaultAxes.x], {name:"c"});
var l = board.create('parallel', [board.defaultAxes.c], {name:"l", withLabel:true});

var par = board.create('parabola', [f, l]);

var P = board.create('glider', [-1, 2, par], {name: 'P'});
var s1 = board.create('segment', [f,P]);
//var s2 = board.create('segment', [f2,P]);

//var txt = board.create('text', [0.2, 4, () => "|Pf| + |Pf'| = " + P.Dist(f1).toFixed(2) + ' + ' + P.Dist(f2).toFixed(2) + ' = ' + (P.Dist(f1) + P.Dist(f2)).toFixed(2)]);

</jsxgraph>

=== The underlying JavaScript code ===
<source lang="javascript">
</source>
[[Category:Examples]]
[[Category:Geometry]]