# Question 8.T.10: Let f : [a, b] → [c, d] be Riemann integrable. If φ : [c, d]...

Let f : [a, b] → [c, d] be Riemann integrable. If φ : [c, d] → \mathbb{R} is continuous, then φ ◦ f is Riemann integrable on [a, b].

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