I wrote a code to create a bode plot of a RLC circuit:

R1 = 100;

R2 = R1;

C = 10^-6;

L = 20;

num = [0 L R2];

den = [R1*C*L (R1*R2*C)+L R2+R1];

sys = tf(num,den);

bode(sys)

and when I run it, an empty plot box pops up and I get the following error message:

Error using DynamicSystem/bode (line 98)

Too many input arguments.

Why is it doing this and how can I fix it?

Thanks!