 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2025/ia/paper-1/3e/b/solution

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

f' (z) = \sum_{n = 1}^{\infty} n a_{n} z^{n - 1} .

The differentiated series has the same radius of convergence

R

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