Need help in creating a script without using for loops.

I am trying to write a scrpt without using for loops. Attach is the scripts with for loops. They are for Q3a and Q3b.

[KSSV]

Home Work......what have you attempted?

[matthew choo]

it's hw. this is what I am trying to do.

[KSSV]

Don't show your image as a image snippet....copy your code here.

[matthew choo]

%Biosensor Project 2 Q3
%Develop a function in MatLab to 
%Calculate the Discrete Fourier Transform
%Check the function with the function in Matlab.
%Develop a function. Don't use loop.
%Implement function with matrices.
%To test function using following signals.

%a)Aperiodic signal
%x[n]={0,1,2,3,4,3,2,1,0,0,0,0}


x=[0 1 2 3 4 3 2 1 0 0 ]
l=length(x)

disp('array initialized with zero and length l')

for k=1:10
    xk(k)=0;
    for n=1:10
       
         xk(k)=xk(k)+x(n)*k;         
    end
end
disp('displaying final transform')
disp(xk)

%function [Xk] = dft(xn)
%x=[0 1 2 3 4 3 2 1 0 0 ]
%len = length(xn);

%w = 2*pi*linspace(0,1-1/len,len);
%Xk = exp(-1j*w'*(n-1))*xn';

Answer 1

[David Hill]

N=length(x);
Xk=sum(x.*exp((-1i*2*pi/N*(0:N-1)).*(0:N-1)'),2);