Order the steps for the pseudocode of the Trapezoidal Method

Order the steps for the pseudocode of the Trapezoidal Method, with (1) as the first step, (2) as the next step, etc.

Solution

The order of given trapezoidal method pseudocode will be as follows :

1) Define the function f(x) to be integrated.
2) input the upper and lowe limits of integration a and b as well as the number of panels n
3) calculate the panel width using h= (b-a)/n
4) start the accumulating sum as : sum = f(a)+f(b)
5) loop over the n panels : sum = sum + 2 . f(a+i.h)
6) multiply the current value sum by h/2
7) display the value of this variable as output : sum