Each of Problem contains a function and its graph. For each problem, answer parts (a) and (b).
(a) Use the graph to determine, as well as you can,

(i) Vertical asymptotes.    (ii) lim _x→∞ f (x).

(iii) lim _x→-∞ f (x).             (iv) Horizontal asymptotes.

(b) Check your conclusions in (a) by using the functions to determine items (i)–(iv) analytically.

4x2 f(x) x - 4x + 4 35 30 25 y = f(x) 20 15 10 + - 20-10 10 20 30 40