SimReal: Mathematics - Conic - Parabola [SimReal] [Library] [Help] [Reflection Paraboloide] Parabola This application shows some properties of a parabola. As default you will see the graph of y = (1/4p)*x^2 = 0.125x^2, a point P on the parabola (defult in origin), the focus point (default (0,2)) and the directrix (default y = -2). Use the big scrollbar in the bottom of the simulation window to move the point P along the graph. Use the scrollbar in the control window to change the position of the focus point F. ```Control objects: Function y = : The arithmetic expression of the function x = : The current x-value of the point P on the graph y = : The current y-value of the point P on the graph Graph : Show/hide the graph P : Show/hide the point P on the graph F : Show/hide the focus point F Directrix : Show/hide the directrix Line FPQ : Shoe/hide the line FP and the line PQ Beam : Show/hide vertical lines reflected in the graph Tangent : Show/hide the tangent of the graph at point P Normal : Show/hide the normal of the graph at point P Focus Point : Change the position of the focus point F Axis : Show/hide the axis in the graph window Grid : Show/hide the grid in the graph window Coord : Change the unit value on the x- and y-axis Origin : Click in the window to change the origin Reset : Set the graph back to default position ``` 