Let . At which of the following points is…

MATHEMATICS · Single correct · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Let

f(x)=\dfrac{(x-1)(x+2)}{x-1}

. At which of the following points is

f(x)

discontinuous? (a)

x=-2

(b)

f

is continuous everywhere (c)

x=1

(d)

x=1 \text{ and } x=-2