# Difference between revisions of "Differential equations"

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Jump to navigationJump to searchA WASSERMANN (talk | contribs) |
A WASSERMANN (talk | contribs) |
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Line 1: | Line 1: | ||

+ | <html> | ||

+ | <form> | ||

+ | f(t,x)=<input type="text" id="odeinput"><input type=button value="ok" onclick="doIt()"> | ||

+ | </form> | ||

+ | </html> | ||

<jsxgraph width="500" height="500"> | <jsxgraph width="500" height="500"> | ||

var brd = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox:[-5,5,5,-5]}); | var brd = JXG.JSXGraph.initBoard('jxgbox', {axis:true, boundingbox:[-5,5,5,-5]}); | ||

var P = brd.create('point',[0,0], {name:'x_0'}); | var P = brd.create('point',[0,0], {name:'x_0'}); | ||

− | var f = function(t, | + | var f = function(t,xx) { |

− | + | var x = xx[0]; | |

+ | y = 3*x; | ||

+ | |||

+ | return [y]; | ||

}; | }; | ||

+ | |||

+ | function doIt() { | ||

+ | var t = document.getElementById(odeinput).value; | ||

+ | f = new Function("t", "xx", "var x = xx[0]; var y = " + t + "; return [y]"); | ||

+ | } | ||

function ode() { | function ode() { |

## Revision as of 10:36, 14 July 2010