Partial derivatives and Tangent plane

This simulation shows the geometric interpretation of the partial derivatives of f(x,y) at point A in . It also shows the tangent plane at that point. Things to try:               
  • Drag the point A in the xy-plane or type specific values on the boxes.             
  • Select the object you want to show: Tangent plane, fx or fy.           
  • Use right click and drag the mouse to rotate the 3D view or click on View button.