imo class 12 definite integration

If d/dx [G(x)] = f(x), what is the value of d/dx [ ∫[a to x] f(t) dt ]?

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If d/dx [G(x)] = f(x), what is the value of d/dx [ ∫[a to x] f(t) dt ]?

  • A. f(x)
  • B. G(x)
  • C. f(a)
  • D. f(x) − f(a)

Answer: A) f(x)

Explanation: By the First Fundamental Theorem of Calculus, d/dx ∫[a to x] f(t) dt = f(x).

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