Write a script file to integrate the function f(x)=x^3+tan(x)+C using the trapezium rule.Calculate the integral between the end points x=2 and x=4 with strip size 0.1.Calculate the integral for range of values from 1 to 3 in steps of 0.1.plot the integral obtained for different values of C?
I wrote the code and it is calculating the correct integrals but it is not plotting the integrals obtained for different values of C .can u please help me to modify my code so that it plots :)
The Attempt at a Solution
This is my code that I have been working on:
% What are the integration limits?
a = 2;
% What is the integration step size?
dx = 0.1;
% An array containing the x points.
x = [a:dx:b];
% What is the function to integrate?
% The number of points
N = length(y);
%initialise the area variable
sum_y = 0;
%sum the interior elements of the y array
%note how the loop starts at 2 and stops at N-1
for I = 2:N-1
sum_y = sum_y + y(I);
area = dx*((y(1) + y(N))/2 + sum_y)
Thank you for your help:)