Question: Consider the Dirichlet function, introduced in Example 5.1.6(g), defined by f(x) := 1 for x (0, 1) rational and f(x) := 0 for x

Consider the Dirichlet function, introduced in Example 5.1.6(g), defined by f(x) := 1 for x ∈
(0, 1) rational and f(x) := 0 for x ∈ (0, 1) irrational. Use the preceding exercise to show that f is not Riemann integrable on [0, 1].

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