Copy of Functions of two variables - partial derivatives
Instructions
1. Key in the function you would like to visualize into the input box.
2. You can click and drag on the 3D curve to zoom in and out, or rotate the curve to see it from all sides.
3. Use the sliders to change the values of a (x-coordinate) and b (y-coordinate) to see point P move on the surface.
4. Use the checkboxes to see the partial derivatives with respect to x and with respect to y.
5. Refresh the page if anything goes wrong.