| 9 |   | !and like a resultant we obtain rectangle formula. Second is trapeze method and the same like !in the first method after integration we obtain the trapeze formula. And the third method is !Simpson method where the function which is integrated, is parabolic and after integration     | 
                      
                      
                        |   | 9 | !and like a resultant we obtain rectangle formula. Second is trapeze method and the same like | 
                      
                        |   | 10 | !in the first method after integration we obtain the trapeze formula. And the third method is | 
                      
                        |   | 11 | !Simpson method where the function which is integrated, is parabolic and after integration     |