Rectangular curve to polar curve
Edit the function f(x); use the variable x here. Then either drag the slider for θ or click play in the bottom left corner of either graphics window to observe the relationship between the rectangular curve and the polar curve.
Reset Trace sets θ to zero, refreshes the view, and turns on tracing. Clear Trace refreshes the view without changing the value of θ. Trace On and Trace Off toggle whether the trace is shown when θ changes.