 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2025/ia/paper-2/7c/a/solution

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

Choose

ω = \frac{k}{m} - \frac{b ^{2}}{4 m ^{2}}, κ = \frac{b}{2 mω}, T = ω t^{*} .

Using

δ (t - n t^{*}) = ω δ (τ - n T)

and

y = mω x / P

then gives exactly the displayed dimensionless equation.

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