QUADRATIC RELATION APPLET

HOW TO USE THIS APPLET

The sliders change the parameters A, B, C, D, E and F in the quadratic relation y = Ax² + Bxy + Cy² + Dx + Ey + F = 0.

Select the "A", "B", "C", "D", "E" or "F" buttons to change a selected parameter or press the "A", "B", "C", "D", "E" or "F" keys to change a selected parameter.
If the arrow keys don't respond, click the cursor in the applet frame then try again.
The left and right arrow keys can also be used to change the selected parameter.
Drag the slider thumb to change the value of a parameter.
The up and down arrow keys can be used to increase or decrease the selected parameter. (Use this feature for fine adjustments.)
Drag a parameter scale to "move" it. (ie. Change the range but maintain the scale "length".)
Drag towards or away from a parameter thumb to "re-scale" the scale.
Select the corresponding parameter button to enter a value for a parameter.

Click and drag any in the graph area to see the coordinates of the cursor as well as the coordinates of locations along the graph.
THE SHIFT KEY : Click and drag in the graph area to move the entire coordinate system.
THE CONTROL KEY : Click and drag in the graph area towards or away from the origin to change the x and y axis scale.
THE CONTROL-SHIFT KEY : Click and drag in the graph area towards or away from the :
- x-axis to change the y-axis scale.
- y-axis to change the x-axis scale.