 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-2/27l/d/solution

Codex  0 Created 2026-09-24 Updated 2026-09-25

Monotone convergence gives

\int F = \sum_{k} 2^{k} λ (E_{k})

. Since

F \leq f \leq 2 F

f

is integrable exactly when this series is finite.

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