Learning Guide Learning Guide

104 • Chapter 4: Graphics0.40.2–1 –0.5 0.5 1–0.2–0.4Here is the graph of θ = sin(3r).> polarplot( [ r, sin(3*r), r=0..7 ] );420–21 2 3 4 5 6–4Functions with DiscontinuitiesFunctions with discontinuities require extra attention. This function hastwo discontinuities, at x = 1 and at x = 2.⎧⎨ −1 if x < 1,f(x) = 1 if 1 ≤ x < 2,⎩3 otherwise.Here is how to define f(x) in Maple.> f := x -> piecewise( x