Difference between revisions of "Parabola II"
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Jump to navigationJump to searchA WASSERMANN (talk | contribs) |
A WASSERMANN (talk | contribs) |
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| Line 12: | Line 12: | ||
var par = board.create('parabola', [f, l]); | var par = board.create('parabola', [f, l]); | ||
| − | var P = board.create('glider', [ | + | 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 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> | ||
