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<jsxgraph width="600" height="400" box="jxgbox1"> board1 = JXG.JSXGraph.initBoard('jxgbox1', {boundingbox: [-6, 25, 6, -15], axis: true}); board1.suspendUpdate(); board1.create('functiongraph', [function(t){ return Math.exp(t); },-10, 10], {strokeColor: "#cccccc"}); var s = board1.create('slider', [[0.75,-2],[5,-2.0],[0,0,15]], {name:'S',snapWidth:1}); board1.create('text',[-4,10, function() { return 'n='+s.Value(); } ]); board1.create('text',[-4,8, function() { var val = 0, i, sv = s.Value()+1; for(i = 0; i < sv; i++) { val+= 1.0/JXG.Math.factorial(i); } return 'e~'+(val).toFixed(10); } ]); board1.create('functiongraph', [ function(t) { var val = 0, i, sv = s.Value()+1; for(i = 0; i < sv; i++) { val+= Math.pow(t,i)/JXG.Math.factorial(i); } return val; }, -10, 10], {strokeColor: "#bb0000", curveType:'plot'}); board1.unsuspendUpdate(); </jsxgraph> === References === * [http://en.wikipedia.org/wiki/Exponential_function http://en.wikipedia.org/wiki/Exponential_function] === The underlying JavaScript code === <source lang="javascript"> board1 = JXG.JSXGraph.initBoard('jxgbox1', {boundingbox: [-6, 25, 6, -15], axis: true}); board1.suspendUpdate(); board1.create('functiongraph', [function(t){ return Math.exp(t); },-10, 10], {strokeColor: "#cccccc"}); var s = board1.create('slider', [[0.75,-2],[5,-2.0],[0,0,15]], {name:'S',snapWidth:1}); board1.create('text',[-4,10, function() { return 'n='+s.Value(); } ]); board1.create('text',[-4,8, function() { var val = 0, i, sv = s.Value()+1; for(i = 0; i < sv; i++) { val+= 1.0/JXG.Math.factorial(i); } return 'e~'+(val).toFixed(10); } ]); board1.create('functiongraph', [ function(t) { var val = 0, i, sv = s.Value()+1; for(i = 0; i < sv; i++) { val+= Math.pow(t,i)/JXG.Math.factorial(i); } return val; }, -10, 10], {strokeColor: "#bb0000", curveType:'plot'}); board1.unsuspendUpdate(); </source> [[Category:Examples]] [[Category:Calculus]]

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