(12) Consider the rational function r(x) = Evaluate the local behavior: Asx-1 r(x) As x1 r(x) As x 2 r(x) As x 2 r(x) As x 4 r(x) As x 4 r(x) (x+1)(7x-3)(x-1)) = (x+1)(x-4)(x-2)