Inner matrix dimensions must agree.

I have this program

clear all;
f=1E3;
L1=1E-3;
L2=100;
Rs=1E-6;
R1=10;
w=2*pi*f;
k=10;
%yk=eye(21); 
cnt = 1;

for a = -11:k-1
    omega = w*(a+1);
    yk(cnt,cnt)=1/[Rs+(j*omega*L2*(R1+j*omega*L1))/(R1+j*omega*(L1+L2))];
    cnt = cnt + 1;
end

Ek=5/sqrt(2);
%uab0=zeros(21,1);
cnt = 1;

for b= -11:k-1
    omega= w*(b+1);
    uab0(cnt,1)=j*omega*L2*[(-Ek)/(R1+j*omega*(L1+L2))];
    cnt = cnt + 1;
end

Is=1E-9;
kt = 1.38*10^(-23);
q = 1.602*10^(-19);
T = 300;
VT = kt*T/q;
m = 1.5;

x=load('F:\udk.txt');

for i = 1:21
    idk=Is*(exp(x/(m*VT))-1);
end

idt=fft(idk);

udt=fft(x);

Il=yk*udt-yk*uab0;
In=idt;

F=In+Il;

Err=conj(F)*F;

My problem is in the last line where I want to calculate the error Err.

Answer 1

[bym]

What form do you expect Err to be? Perhaps you want

Err = conj(F).*F  %<-note dot before *