Difference between revisions of "Affine normalform of parabola"

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(Created page with " <jsxgraph width="500" height="500"> JXG.Options.label.autoPosition = true; JXG.Options.text.fontSize = 20; JXG.Options.line.strokeWidth = 1; var board = JXG.JSXGraph.initBoa...")
 
 
(17 intermediate revisions by the same user not shown)
Line 2: Line 2:
 
<jsxgraph width="500" height="500">
 
<jsxgraph width="500" height="500">
 
JXG.Options.label.autoPosition = true;
 
JXG.Options.label.autoPosition = true;
JXG.Options.text.fontSize = 20;
+
JXG.Options.text.fontSize = 16;
 
JXG.Options.line.strokeWidth = 1;
 
JXG.Options.line.strokeWidth = 1;
  
var board = JXG.JSXGraph.initBoard('jxgbox', { boundingbox: [-5, 5, 5, -5], axis: true});
+
var board = JXG.JSXGraph.initBoard('jxgbox', { boundingbox: [-2, 5, 8, -5], axis: true, showClearTraces: true});
  
var a = board.create('slider', [[1,4],[4,4], [-4, 1, 4]], {name: 'a'});
+
var a = board.create('slider', [[3,4], [6,4],   [-4, 2, 4]], {name: 'a'});
var b = board.create('slider', [[1,3.5],[4,3.5], [-4, 1, 4]], {name: 'b'});
+
var b = board.create('slider', [[3,3.5],[6,3.5], [-4, 1, 4]], {name: 'b'});
var c = board.create('slider', [[1,3],[4,3], [-4, 1, 4]], {name: 'c'});
+
var c = board.create('slider', [[3,3], [6,3],   [-4, 1, 4]], {name: 'c'});
var d = board.create('slider', [[1,2.5],[4,2.5], [-4, 1, 4]], {name: 'd'});
+
var d = board.create('slider', [[3,2.5],[6,2.5], [-4, -1, 4]], {name: 'd'});
  
 +
var Q3 = board.create('functiongraph', ['x^2']);
 +
var x = board.create('glider', [2, 4, Q3], {name:'x', trace:true});
 +
var t = board.create('point', [1, 0], {name:'t'});
 +
board.create('arrow', [[0,0], t]);
 +
 +
var y = board.create('point', [
 +
            () => a.Value() * x.X() + b.Value() * x.Y() + t.X(),
 +
            () => c.Value() * x.X() + d.Value() * x.Y() + t.Y()
 +
        ], {name: 'y', color:'orange', trace: true});
 
</jsxgraph>
 
</jsxgraph>
  
Line 17: Line 26:
  
 
<source lang="javascript">
 
<source lang="javascript">
 +
JXG.Options.label.autoPosition = true;
 +
JXG.Options.text.fontSize = 16;
 +
JXG.Options.line.strokeWidth = 1;
 +
 +
var board = JXG.JSXGraph.initBoard('jxgbox', { boundingbox: [-2, 5, 8, -5], axis: true, showClearTraces: true});
 +
 +
var a = board.create('slider', [[3,4],  [6,4],  [-4, 2, 4]], {name: 'a'});
 +
var b = board.create('slider', [[3,3.5],[6,3.5], [-4, 1, 4]], {name: 'b'});
 +
var c = board.create('slider', [[3,3],  [6,3],  [-4, 1, 4]], {name: 'c'});
 +
var d = board.create('slider', [[3,2.5],[6,2.5], [-4, -1, 4]], {name: 'd'});
 +
 +
var Q3 = board.create('functiongraph', ['x^2']);
 +
var x = board.create('glider', [2, 4, Q3], {name:'x', trace:true});
 +
var t = board.create('point', [1, 0], {name:'t'});
 +
board.create('arrow', [[0,0], t]);
 +
 +
var y = board.create('point', [
 +
            () => a.Value() * x.X() + b.Value() * x.Y() + t.X(),
 +
            () => c.Value() * x.X() + d.Value() * x.Y() + t.Y()
 +
        ], {name: 'y', color:'orange', trace: true});
 
</source>
 
</source>
 
[[Category:Examples]]
 
[[Category:Examples]]
 
[[Category:Geometry]]
 
[[Category:Geometry]]

Latest revision as of 21:53, 6 June 2021

The underlying JavaScript code

JXG.Options.label.autoPosition = true;
JXG.Options.text.fontSize = 16;
JXG.Options.line.strokeWidth = 1;

var board = JXG.JSXGraph.initBoard('jxgbox', { boundingbox: [-2, 5, 8, -5], axis: true, showClearTraces: true});

var a = board.create('slider', [[3,4],  [6,4],   [-4, 2, 4]], {name: 'a'});
var b = board.create('slider', [[3,3.5],[6,3.5], [-4, 1, 4]], {name: 'b'});
var c = board.create('slider', [[3,3],  [6,3],   [-4, 1, 4]], {name: 'c'});
var d = board.create('slider', [[3,2.5],[6,2.5], [-4, -1, 4]], {name: 'd'});

var Q3 = board.create('functiongraph', ['x^2']);
var x = board.create('glider', [2, 4, Q3], {name:'x', trace:true});
var t = board.create('point', [1, 0], {name:'t'});
board.create('arrow', [[0,0], t]);

var y = board.create('point', [
            () => a.Value() * x.X() + b.Value() * x.Y() + t.X(),
            () => c.Value() * x.X() + d.Value() * x.Y() + t.Y()
        ], {name: 'y', color:'orange', trace: true});