ERROR: Incorrect dimensions for matrix multiplication

ERROR: Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the

number of rows in the second matrix. To perform elementwise multiplication, use '.*'.

syms s t

A=[1 2 0;1 4 3; 0 2 1];

B=[3 0;1 6;3 2];

C=[6 1 2;2 3 1];

D=[0 0;0 0];

sys=ss(A,B,C,D);

x0=[1; 1 ;1];

t=0:0.01:10;

u=sin(2*t).*(t>=0);

w=2;

plot(t,(((C*inv(j*w*eye(3)-A)*B+D)*exp(j*w*t)-(C*inv(-j*w*eye(3)-A)*B+D)*exp(-j*w*t)))/(2*j))

[Walter Roberson]

(C*inv(j*w*eye(3)-A)*B+D) is 2x2. j*w*t is 1x1001 I think. You cannot * the two parts together. j*w*t would need to be 2 x something.