p1_4.m

matlab 数字实验

% Program P1_4
% Generation of a sinusoidal sequence
n = 0:40;	
f = 0.1;			
phase = 0;			
A = 1.5;			
arg = 2*pi*f*n - phase; 
x = A*cos(arg);
clf;			% Clear old graph
stem(n,x);		% Plot the generated sequence
axis([0 40 -2 2]);
grid; 
title('Sinusoidal Sequence');
xlabel('Time index n');
ylabel('Amplitude');
axis;