Matlab Error using .*. Matrix dimensions must agree

Hello! I am trying to run this code but I keep getting error.

time_res = 1e-2;
T = 15;
t_lim = -T:T;
N = 40; 
k = -N:N;
w0 = 2*pi/T;
tp = -T/2:time_res:T/2;
xp = tp.^3;  
Basis = exp(1i * w0 * k.' * tp);
Ck = (1/T) * int(xp * (exp(-1i * w0 *k * tp)), tp, -T, T);
t = t_lim;
x = Ck * Basis;

error for this line

     Ck = (1/T) * int(xp * (exp(-1i * w0 *k * tp)), tp, -T, T);

Whats wrong?

Answer 1

[James Tursa]

k is a vector and tp is a vector. They are not the same size. So you need to revisit this calculation to see what you really want:

xp * (exp(-1i * w0 *k * tp))

[bribee]

I try putting '.' like I did for Basis variable, but it is still not working.