Learning Guide Learning Guide

4.1 Graphing in Two Dimensions • 1030.40.2–0.8–0.6–0.4–0.2 0.2 0.4 0.6 0.80–0.2–0.4–0.6–0.8–1The graph of r = θ is a spiral.> polarplot(theta, theta=0..4*Pi);864–525 10–2–4–6–8–10The polarplot command also accepts parametrized plots. That is,you can express the radius- and angle-coordinates in terms of a parameter,for example, t. The syntax is similar to a parametrized plot in Cartesian(ordinary) coordinates. See this section, page 99.polarplot( [ r-expr, angle-expr, parameter=range ] )The equations r = sin(t) and θ = cos(t) define the following graph.> polarplot( [ sin(t), cos(t), t=0..2*Pi ] );