1. The problem statement, all variables and given/known data Find asymptotes for f(x) = (x^2 -1) / (x - 1). (if exist) 2. Relevant equations g(x) is a (horizontal or oblique) asymptote if lim |f(x) - g(x)| = 0 (here, lim is to be limit as x goes to infinity. don't know how to type it) or if q(x)/p(x) = g(x) + r(x)/p(x) where dimension of r(x) is smaller than that of p(x) 3. The attempt at a solution f(x) = (x^2 - 1) / (x-1) = x+1 (where x ≠ 1) then lim |f(x) - (x+1)| = 0 so asymptote is x+1. But the answer is 'no asymptote'. What am I missing?