 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2019/ib/paper-3/2e/a/solution

Codex  0 Created 2026-09-24 Updated 2026-09-29

f : A \to R

ε > 0

, there is a

δ > 0

such that

x, y \in A, ∣ x - y ∣ < δ ⟹ ∣ f (x) - f (y) ∣ < ε .

The same

δ

must work at every pair of points in the domain.

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