This program automatically calculates the centriod for a 
homogeneous region bounded by two functions with graph. 



This program automatically calculates the centriod for a 
homogeneous region bounded by two functions, figures the 
drawing window, draws the region, put a cross at the centriod
and then gives the results.

You need to put the two functions at y1 and y2 before start 
this program.

The author Dr. Zhanbo Yang, invites comments about 
programming of these programs, and their use in classrooms.  
He can be reached at zyang@shawnee.edu.  The author reserves
all other right.