# Difference between revisions of "Vertex equations of a quadratic function and it's inverse"

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Jump to navigationJump to searchA WASSERMANN (talk | contribs) |
A WASSERMANN (talk | contribs) |
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var b = JXG.JSXGraph.initBoard('box1', {boundingbox: [-5, 5, 5, -5], grid:true}); | var b = JXG.JSXGraph.initBoard('box1', {boundingbox: [-5, 5, 5, -5], grid:true}); | ||

var v = b.create('point', [0,0], {name:'V'}), | var v = b.create('point', [0,0], {name:'V'}), | ||

− | p = b.create('point', [3,3], { | + | p = b.create('point', [3,3], {name:'P'}), |

f = b.create('functiongraph', [ | f = b.create('functiongraph', [ | ||

function(x) { | function(x) { | ||

Line 13: | Line 13: | ||

})(); | })(); | ||

</jsxgraph> | </jsxgraph> | ||

+ | |||

+ | <jsxgraph width="300" height="300" box="box2"> | ||

+ | (function() { | ||

+ | var b = JXG.JSXGraph.initBoard('box2', {boundingbox: [-5, 5, 5, -5], grid:true}); | ||

+ | var v = b.create('point', [0,0], {name:'V'}), | ||

+ | p = b.create('point', [3,3], {name:'P'}), | ||

+ | f = b.create('functiongraph', [ | ||

+ | function(x) { | ||

+ | var den = p.Y()- v.Y(), | ||

+ | a = (p.X() - v.X()) / (den * den); | ||

+ | return Math.sqrt((x - v.X()) / a) + v.Y(); | ||

+ | }]); | ||

+ | |||

+ | })(); | ||

+ | </jsxgraph> | ||

+ | |||

+ | |||

[[Category:Examples]] | [[Category:Examples]] | ||

[[Category:Calculus]] | [[Category:Calculus]] | ||

[[Category:Interpolation]] | [[Category:Interpolation]] |