Arc length: Difference between revisions

Revision as of 12:44, 7 June 2009

@@ Line 4: / Line 4: @@
 var f = function(x){ return 0.2*x*x+0.5*Math.sin(x); }
 var plot = brd.createElement('functiongraph',[f]);
+var sc = brd.createElement('curve',[[0],[0]]);
+sc.updataDataArray = function() {
+   var i;
+   var m = n.Value();
+   m = Math.round(m);
+   var d = (5-0)/m;
+   this.dataX = [];
+   this.dataY = [];
+   this.dataX[0] = 0.0;
+   this.dataY[0] = f(0.0);
+   for (i=1;i<m;i++) {
+     this.dataX.append(0.0+i*d);
+     this.dataY.append(f(0.0+(i-1)*d));
+     this.dataX.append(0.0+i*d);
+     this.dataY.append(f(0.0+i*d));
+   }
+}