If you already know the expression of a function, you can use the "3D Function Plot" tool to plot its surface. Click the menu "Science" > "3D Function Graph" to open the function expression input panel

Enter the function formula and value range in the input box above, then press 'Preview' to see the surface created in the box below.

Using the tools on the toolbar to adjust the graphics effect:

 Graphics zoom in and out

 Move the graphics in four directions: up, down, left, and right

 Move the light entering the figure in four directions: up, down, left, and right

 Zoom in and out to observe the graphics

 Move the view in four directions: up, down, left, and right

 Set the number of segments in the horizontal (x-axis) and vertical (y-axis) directions of the graph. The larger the value, the smoother the graph.

 Collapse and expand the function expression input box

Note: This graphing type provides multiple types  for reference and use; double-click on the completed graph to pop up the "3D Function Graphing" panel to modify the parameters.

Please click here to watch the video operation demonstration