Could someone please verify if this rational equation is undefined? I think that it is: w/2 - 2/w = 0
You just defined it. It can be rewritten w/2 = 2/w, which implies that
w^2 = 4
There are two possible values of w: 2 and -2
w^2 = 4
There are two possible values of w: 2 and -2