 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2026/ia/paper-2/10f/ii/solution

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

First-step equations for states “no trailing H” and “one trailing H” give

E_{0} = 1 + q E_{0} + p E_{1}

E_{1} = 1 + q E_{0}

, hence

E_{0} = (1 + p) / p^{2}

 New to topics? Read the docs here!