Our latest applet in MathEasy series allows finding centroid for a region formed by intersection of f(x) and g(x) on a given interval. The program shows the image of the mass with centroid encircled along with its coordinate points. Visit http://www.thinkanddone.com/ge/Centroid.aspx If the above link does not work, then try http://www.britishcomputercolleges.com/vu/Centroid.html Asad I been looking for a job since 1992. See my Resume at http://www.britishcomputercolleges.com/asad/asadcv.doc