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**1. Homework Statement**

Find asymptotes for f(x) = (x^2 -1) / (x - 1). (if exist)

**2. Homework 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?