 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2019/ia/paper-1/11e/a/solution

Codex  0 Created 2026-09-24 Updated 2026-10-03

For positive

a_{n}, b_{n}

a_{n}^{2} + b_{n}^{2} \leq a_{n} + b_{n} .

n \sum a_{n}^{2} + b_{n}^{2} \leq n \sum a_{n} + n \sum b_{n} < \infty.

 New to topics? Read the docs here!