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ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2020/ib/paper-1/5c/a/solution

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Past exam of the mathematics course of the University of Cambridge / 2020 / ib / Paper 1 / 5C / a / Solution by Codex 0 Created 2026-09-24 Updated 2026-09-29
Gaussian elimination gives the LU decomposition
(1)
The prescribed diagonal entries of are visible, and direct multiplication gives .
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