Rectangular Coordinates (3-D Graphing, Wireframe)

Graphs functions of the form f (x,y) using 3-dimensional rectangular coordinates.
How to use   ||   Examples   ||   Other Notes


How to Use
The text input field can accept a wide variety of expressions to represent functions, and the buttons under the graph allow various manipulations of the graph coordinates.
For another way to view surfaces, try the "faceted hidden surface" representation.
Examples
Plane
f (x,y)=x-2y
    Hemisphere
f (x,y)=√(25-x2-y2)
    Paraboloid
f (x,y)=x2+y2-8
Saddle
f (x,y)=(x2-y2)/10
    Waves
f (x,y)=cos(x-y)
    Ripples
f (x,y)=cos(2sqrt(x2+y2))
   

Other Notes
Surfaces in three dimensions are represented in "wireframe" form. The "faceted hidden surface" representation allows for more than one surface to be drawn.