Difference between revisions of "Inequalities"

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Line 6: Line 6:
 
     ineq1 = b.create('inequality', [line1], {inverse: true}),
 
     ineq1 = b.create('inequality', [line1], {inverse: true}),
  
     line2 = b.create('line', [1, 2, -3]),
+
     line2 = b.create('line', [1, 2, -3]), // Line y = 2/3 x + 1 or 0 = -3y + 2x +1
 
     ineq2 = b.create('inequality', [line2], {fillColor: 'yellow'});
 
     ineq2 = b.create('inequality', [line2], {fillColor: 'yellow'});
  
Line 19: Line 19:
 
     ineq1 = b.create('inequality', [line1], {inverse: true}),
 
     ineq1 = b.create('inequality', [line1], {inverse: true}),
  
     line2 = b.create('line', [1, 2, -3]), // Line y = 2/3 x - 1
+
     line2 = b.create('line', [1, 2, -3]), // Line y = 2/3 x + 1 or 0 = -3y + 2x +1
 
     ineq2 = b.create('inequality', [line2], {fillColor: 'yellow'});
 
     ineq2 = b.create('inequality', [line2], {fillColor: 'yellow'});
  

Revision as of 14:59, 16 December 2014

The JavaScript code

var b = JXG.JSXGraph.initBoard('box1', {boundingbox: [-5, 5, 5, -5], axis:true});
var c = b.create('slider', [[-3,4], [2,4], [-5,1,5]]),
    line1 = b.create('line', [function() { return [c.Value(), 0, -1]; }], {strokeColor: 'black'}),
    ineq1 = b.create('inequality', [line1], {inverse: true}),

    line2 = b.create('line', [1, 2, -3]), // Line y = 2/3 x + 1 or 0 = -3y + 2x +1
    ineq2 = b.create('inequality', [line2], {fillColor: 'yellow'});