MATLAB LAB3 EX1

clc
clear all
close all
N=256
T=pi
omega0=2*pi/T
Ts=T/N
nx=0:1:N-1
tx=0:Ts:(N-1)*Ts
xn=exp(-nx*Ts/2)
figure(1)
plot(tx,xn)
xlabel('n')
ylabel('x(t)=exp(-t/2)')
xlim([0 3.14])
ylim([0 1])
M=10
xn(1)=(exp(-0)+exp(-pi/2))/2
ak=exp
fscoefficients(xn,T,M)
k=0:1:length(ak)-1
[akangle,akmag]=cart2pool(real(ak),imag(ak))
figure(2)
subplot(2,1,1)
stem(k,akmag)
xlabel('k')
ylabel('|a_k|')
title('phase spectra plot')