Re: Shade area between two polar curves

*To*: mathgroup at smc.vnet.net*Subject*: [mg100172] Re: [mg100154] Shade area between two polar curves*From*: "David Park" <djmpark at comcast.net>*Date*: Wed, 27 May 2009 04:06:27 -0400 (EDT)*References*: <9507429.1243330897252.JavaMail.root@n11>

Show[ {PolarPlot[{1 + 2 Cos[t], 2}, {t, 0, 2 \[Pi]}], RegionPlot[ 2 <= Sqrt[x^2 + y^2] <= 1 + 2 x/Sqrt[(x^2 + y^2)], {x, 0, 3}, {y, -2, 2}, MaxRecursion -> 3, BoundaryStyle -> Thick]}, Axes -> False, ImageSize -> 300] From: Chee Lim Cheung [mailto:CheeLC at sp.edu.sg] Hi All I have plotted two graphs using PolarPlot, namely the limacon r=1+2 cos(t) and the circle r = 2 from t = 0 to t = 2 Pi. and I wish to shade the area inside the limacon but outside the circle. Can anyone suggest a way to do it? Thanks and Regards Chee

**Follow-Ups**:**Re: Re: Shade area between two polar curves***From:*Murray Eisenberg <murray@math.umass.edu>