 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ii/paper-3/40b/a/solution

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

Γ_{9} u = h^{2} Δ u + (h^{4} /12) Δ^{2} u + O (h^{6}) = h^{2} f + (h^{4} /12) Δ f + O (h^{6})

. Thus the local residual is

O (h^{4})

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