JSX Trigonometrische Funktionen
Aus Wiki1
(Unterschied zwischen Versionen)
| Zeile 3: | Zeile 3: | ||
<jsxgraph width="600" height="600" box="box"> | <jsxgraph width="600" height="600" box="box"> | ||
var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, grid:true, unitX: 100, unitY: 100}); | var brd = JXG.JSXGraph.initBoard('box', {originX: 300, originY: 300, grid:true, unitX: 100, unitY: 100}); | ||
| - | var ax = brd.createElement('line',[[0,0],[1,0]],{visible: | + | var ax = brd.createElement('line',[[0,0],[1,0]],{visible:false}); |
| - | var ay = brd.createElement('line',[[0,0],[0,1]],{visible: | + | var ay = brd.createElement('line',[[0,0],[0,1]],{visible:false}); |
var p0 = brd.createElement('point',[0,0],{fixed:true,visible:false}); | var p0 = brd.createElement('point',[0,0],{fixed:true,visible:false}); | ||
| Zeile 17: | Zeile 17: | ||
brd.createElement('line',[p2,p4],{straightFirst:false,straightLast:false,strokeColor:'red'}); // cos | brd.createElement('line',[p2,p4],{straightFirst:false,straightLast:false,strokeColor:'red'}); // cos | ||
| - | brd.createElement(' | + | var t = brd.createElement('tangent',[p2],{visible:false}); |
| + | var p5 = brd.createElement('point',[brd.intersectionFunc(t,ax,0)],{visible:false,name:'',withLabel:false}); | ||
| + | var p6 = brd.createElement('point',[brd.intersectionFunc(t,ay,0)],{visible:false,name:'',withLabel:false}); | ||
| + | brd.createElement('line',[p5,p6],{straightFirst:false,straightLast:false}); // tan + cot | ||
| + | brd.createElement('line',[p0,p6],{straightFirst:false,straightLast:false,strokeColor:'green'}); // csc | ||
| + | brd.createElement('line',[p0,p5],{straightFirst:false,straightLast:false,strokeColor:'green'}); // sec | ||
| + | brd.createElement('text',[ | ||
| + | function(){return (p0.X()+p2.X())*0.5;}, | ||
| + | function(){return (p0.Y()+p2.Y())*0.5;}, | ||
| + | '1'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return (p2.X()+p4.X())*0.3;}, | ||
| + | function(){return (p2.Y()+p4.Y())*0.5;}, | ||
| + | 'cos'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return (p2.X()+p3.X())*0.5;}, | ||
| + | function(){return (p2.Y()+p3.Y())*0.5;}, | ||
| + | 'sin'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return 0.1+(p2.X()+p5.X())*0.5;}, | ||
| + | function(){return 0.1+(p2.Y()+p5.Y())*0.5;}, | ||
| + | 'tan'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return 0.1+(p2.X()+p6.X())*0.5;}, | ||
| + | function(){return 0.1+(p2.Y()+p6.Y())*0.5;}, | ||
| + | 'cot'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return -0.2+(p0.X()+p6.X())*0.5;}, | ||
| + | function(){return (p0.Y()+p6.Y())*0.5;}, | ||
| + | 'csc'],{}); | ||
| + | |||
| + | brd.createElement('text',[ | ||
| + | function(){return (p0.X()+p5.X())*0.5;}, | ||
| + | function(){return (p0.Y()+p5.Y())*0.5;}, | ||
| + | 'sec'],{}); | ||
</jsxgraph> | </jsxgraph> | ||
Version vom 19:33, 23. Nov. 2013
Mit Hilfe des Programmpakets JSXGraph (siehe http://jsxgraph.uni-bayreuth.de/wp/) können komplexe, interaktive Grafiken nur mit Hilfe von JavaScript in Webseiten integriert werden. Hier ein Beispiel zur Darstellung der Trigonometrischen Funktionen (der rote Punkt kann mit der Maus bewegt werden!):
