someone who can tell me my mistake why it doesn't graph me?????? QUESTION 14.

P0214: Use function 'conv(h,x)' to compute noncausal

% h convolves causal x
close all; clc
nh = -4:4;
nx = 0:5;
h = ones(1,9);
x = 1:6;
y1 = conv(h,x); % compute convolution
s= (nh(1)+nx(1)):(nh(end)+nx(end)); % define support
m = conv0(h,nh,x,nx); % verification

%plot
plot(x,y1)

Answer 1

[Voss]

Maybe the plot command is never reached because of an error on the previous line:

try
% h convolves causal x
close all; clc
nh = -4:4;
nx = 0:5;
h = ones(1,9);
x = 1:6;
y1 = conv(h,x); % compute convolution
s= (nh(1)+nx(1)):(nh(end)+nx(end)); % define support
m = conv0(h,nh,x,nx); % verification
%plot
plot(x,y1)
catch ME
disp(ME.message);
end % see error message below:

Undefined function 'conv0' for input arguments of type 'double'.

Or maybe you do have a function called conv0 that runs ok, but then calling plot gives an error because x and y1 are of different lengths:

try
% h convolves causal x
close all; clc
nh = -4:4;
nx = 0:5;
h = ones(1,9);
x = 1:6;
y1 = conv(h,x); % compute convolution
s= (nh(1)+nx(1)):(nh(end)+nx(end)); % define support
% m = conv0(h,nh,x,nx); % verification
%plot
plot(x,y1)
catch ME
disp(ME.message);
end % see error message below:

Vectors must be the same length.

Check the command window for error messages.

[ahmed alo]

what dose it mean nx(end)

[Voss]

nx(end) refers to the last element of nx