na-lab-trapezoidal

code

clc;

close all;

f=input("Enter the function");

a=input("enter the starting interval");

b=input("enter the ending interval");

n=input("enter the subinterval");

h=(b-a)/n;

sum=0;

for i=1:n-1

x=a+h*i;

sum=sum+2*f(x);

end

sum=sum+f(a)+f(b);

sum=(h/2)*sum;

disp(sum);