Exercise 8.1.2

Explain why $U (f, P) - U (f, P^{'}) \geq 0$ .

Answers

$P^{'}$ is a refinement of $P$ , so by Lemma 7.2.3, $U (f, P^{'}) \leq U (f, P)$ .

ulissemini

2022-01-27 00:00