For a function that is continuous on the closed interval with and

MATHEMATICS · Single correct · AP · Calculus AB · Limits and Continuity · Limits and Continuity

Problem

For a function ff that is continuous on the closed interval [1,5][1,5] with f(1)=−3f(1)=-3 and f(5)=7f(5)=7, which of the following must be true? (a) There exists c∈(1,5)c\in(1,5) such that f(c)=10f(c)=10. (b) There exists c∈(1,5)c\in(1,5) such that f(c)=0f(c)=0. (c) The function takes only positive values on (1,5)(1,5). (d) The function is differentiable on (1,5)(1,5).

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