fill in harberger triangle

*To*: mathgroup at smc.vnet.net*Subject*: [mg115560] fill in harberger triangle*From*: r_poetic <radford.schantz at mms.gov>*Date*: Fri, 14 Jan 2011 06:20:41 -0500 (EST)

Hello, while the Filling option for Plot is great, how can I use it (or another feature of Mathematica 8) to fill in only the area between a curve and a vertical line and a horizontal line? For instance, between (1) the function Q= A * P ^ E, where A and E are given constants, (2) a horizontal line e.g. P = 100, and (3) a vertical line, e.g. Q = 20. The fill is only inside the triangle-like area. This would be the "harberger triangle" showing consumer surplus in economics. Thanks!