AP Calculus ABmediummcq1 pt

Suppose that f(x) is a continuous function on the interval [a, b] and g(x) is a function such that g(x) = f(x) for all x ∈ [a, b]. Which of the following statements is true about the function h(x) = g(x) + f(x)?

A.D) The function h(x) has a discontinuity at x = b.
B.B) The function h(x) is differentiable on [a, b].
C.C) The function h(x) has a discontinuity at x = a.
D.A) The function h(x) is continuous on [a, b].

Explanation

Core Concept

This question tests the student's understanding of continuity and the properties of continuous functions. Since g(x) and f(x) are both continuous, their sum h(x) is also continuous. Option B is incorrect because h(x) may not be differentiable. Option C is incorrect because h(x) does not have a discontinuity at x = a. Option D is incorrect because h(x) does not have a discontinuity at x = b.

Correct Answer

DA) The function h(x) is continuous on [a, b].

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