If a function is strictly increasing on an interval

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

Problem

If a function

f

is strictly increasing on an interval

I

, which of the following statements is TRUE for any

x_1,x_2\in I

with

x_1<x_2

? (a)

f(x_1)\le f(x_2)

(b)

f(x_1)<f(x_2)

(c)

f(x_1)>f(x_2)

(d)

f(x_1)<f(x_2)\text{ whenever }x_1>x_2