Enter a function f (r,θ)
in the text input field
marked "f (r,θ)="
(Example:f (r,t)=r) Note: Type "t" for θ in the text
input field.
Click the "Graph" button
(this button also refreshes the graph)
Rotate the graph by
clicking and dragging the mouse on the graph.
To erase the graph and all input fields, click the
"Clear" button
There are four input fields which specify
bounds on the variables for the function:
The variable r (the radius)
takes values between r_{min}
and r_{max}, specified by the fields marked
"r_{min}=" and
"r_{max}=".
The variable θ (the angle, measured counterclockwise
in the xy-plane)
takes values between θ_{min}*&pi
and θ_{max}*π, with
θ_{min} and θ_{max}
specified by the fields marked
"θ_{min}=" and
"θ_{max}=".
These four text input fields can accept any decimal number input.
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.