 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-2/10e/b/iii/solution

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

In the orthonormal basis

(∣ G ⟩, ∣ B ⟩)

, direct multiplication gives

Q_{M} = (cos 2 α - sin 2 α sin 2 α cos 2 α)

(up to the equivalent opposite orientation convention).

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