 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-2/16j/a/solution

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

Using the definition twice gives

P (a, b) = 1

when

a \leq b

; when

a > b

a \to b = b

, then

b \to a = 1

, and

1 \to a = a

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