 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2021/ib/paper-3/7a/c/solution

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

ϕ

, one requires

u = \partial_{x} ϕ

and

v = \partial_{y} ϕ

. Integration gives

ϕ (x, y) = - \frac{x}{x ^{2} + y ^{2}},

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