Description as an example application is musical instrument pan flute geometric area calculations are done easily by taking integral of scripth a with a proper limit borders. specific function which result of pyramid surface bar graph. Copyright (c) 2012, Nadir Altinbas All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution