Rolle's Theorem: Difference between revisions

Revision as of 18:24, 21 January 2009

@@ Line 16: / Line 16: @@
          p[2] = board.createElement('point', [-0.5,1], {style:4});
          p[3] = board.createElement('point', [2,0.5], {style:4});
-         var polynomial = function(x) {
+         var f = function(x) {
                  var i;
                  var y = 0.0;
@@ Line 34: / Line 34: @@
                  return y;
              };
-         graph = board.createElement('curve', ['x', polynomial, 'x', -10, 10], {curveType:'graph'});
+         graph = board.createElement('curve', ['x', f, 'x', -10, 10], {curveType:'graph'});
+r = board.createElement('point', [function() { board.root(board.D(f),(p[0].X()+p[1].X())*0.5); },2], {style:6});
 q = board.createElement('glider', [4.5,0,graph], {style:6});
 q2 = board.createElement('point', [function(){ return q.X()+0.01;},
        function(){ return polynomial(q.X()+0.01);}], {style:7,visible:false});
 line = board.createElement('line',[q,q2],{strokeColor:'#ff0000'});
 line = board.createElement('line',[p[0],p[1]],{strokeColor:'#ff0000',dash:1});