Let be twice differentiable with

MATHEMATICS · Single correct · AP · Calculus AB · Analytical Applications of Differentiation · Analytical Applications of Differentiation

Problem

Let

p

be twice differentiable with

p''(x)=x^{2}-4x+3

. For which values of

x

is the graph of

p

concave up? (a)

1<x<3

(b)

x\le 1\text{ or }x\ge 3

(c)

x<1\text{ or }x>3

(d)

x<1

only