Rational functions: Difference between revisions
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A WASSERMANN (talk | contribs) No edit summary |
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p.push(board.createElement('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6})); | p.push(board.createElement('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6})); | ||
board.update(); | board.update(); | ||
} | |||
board2 = JXG.JSXGraph.initBoard('box2', {originX: 150, originY: 200, unitX: 30, unitY: 25}); | |||
// Axes | |||
b1axisx = board2.createElement('axis', [[0,0], [1,0]], {}); | |||
b1axisy = board2.createElement('axis', [[0,0], [0,1]], {}); | |||
var q = []; | |||
q[0] = board2.createElement('point', [-1,2], {style:6}); | |||
q[1] = board2.createElement('point', [3,-1], {style:6}); | |||
var polynomial2 = function(x) { | |||
var i; | |||
var y = 0.0; | |||
var xc = []; | |||
for (i=0;i<p.length;i++) { | |||
xc[i] = q[i].X(); | |||
} | |||
for (i=0;i<p.length;i++) { | |||
var t = q[i].Y(); | |||
for (var k=0;k<q.length;k++) { | |||
if (k!=i) { | |||
t *= (x-xc[k])/(xc[i]-xc[k]); | |||
} | |||
} | |||
y += t; | |||
} | |||
return y; | |||
}; | |||
graph = board2.createElement('curve', ['x', polynomial, 'x', -10, 10], {curveType:'graph'}); | |||
function addPoint2() { | |||
p.push(board2.createElement('point',[(Math.random()-0.5)*10,(Math.random()-0.5)*3],{style:6})); | |||
board2.update(); | |||
} | } | ||
</script> | </script> | ||
</html> | </html> | ||
Revision as of 13:18, 15 December 2008
