 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-1/30l/a/i/solution

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

Use the optimizer for

Z_{0}

also with

Z_{1}

. Strict increase of

U

and a strict inequality on a positive-probability event give

u (Z_{1}) > u (Z_{0})

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