Problem entering functions

[George, Michael David]

I'm trying to just run a simple root locus problem but I can't even use the transfer function on octave.

Here's what I type in and this is what I get:

sys=tf([1], [1 8 32 0]);
error: 'tf' underfined near line 7 column 5

What am I doing wrong??

Michael George
address@hidden
2nd Oak Resident Assistant