 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ia/paper-1/7b/c/solution

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

The subspace

y^{⊥}

is fixed by

M = I - x y^{†}

, while the remaining determinant factor is

1 - y^{†} x

. Thus

det M = 1 - y^{*} \cdot x

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