Let , where is continuous. Which of the following statements must be true for all in…

MATHEMATICS · Single correct · AP · Calculus AB · Integration and Accumulation of Change · Integration and Accumulation of Change

Problem

Let F(x)=∫3xf(t) dtF(x)=\int_{3}^{x} f(t)\,dt, where ff is continuous. Which of the following statements must be true for all xx in the domain of ff? (a) If f(x)<0f(x)<0, then FF is increasing at xx. (b) FF is increasing for all xx because ff is continuous. (c) If f(x)>0f(x)>0, then FF is increasing at xx. (d) If f(x)=0f(x)=0, then FF is increasing at xx.

Related theory

Browse the problem library