Let F(x) = ∫_{0}^{x} t^2 dt. What is F'(x)?

Prepare for the AP Calculus BC Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Maximize your exam performance!

Multiple Choice

Let F(x) = ∫_{0}^{x} t^2 dt. What is F'(x)?

Explanation:
Think of the Fundamental Theorem of Calculus: if F(x) is the integral from a constant to x of f(t) dt, then F'(x) = f(x). Here the integrand is t^2, so F'(x) = x^2. You can also confirm by computing F(x) = ∫_0^x t^2 dt = x^3/3, whose derivative is x^2.

Think of the Fundamental Theorem of Calculus: if F(x) is the integral from a constant to x of f(t) dt, then F'(x) = f(x). Here the integrand is t^2, so F'(x) = x^2. You can also confirm by computing F(x) = ∫_0^x t^2 dt = x^3/3, whose derivative is x^2.

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