Communication Theory, Mathematics Part B and the Mathematics and Philosophy and Mathematics and Statistics joint schools; Thursday 14 June 2007, 9.30am–11.15am. The complete four-page source is privately transcribed from original Part B bundle pages 61–64, supplied through the past-papers disclosure. No exact worked-answer advertisement was found in the bounded availability check. Source coding uses the positive-probability source support. Logarithms and information quantities are in base two unless indicated otherwise.

Communication Theory, Mathematics Part B and the corresponding joint schools; Thursday 12 June 2008, 9.30am–11.15am. The complete three-page source and intact cover are preserved in a private editable transcription from original Part B bundle pages 127–129, supplied through the past-papers disclosure. No exact worked-answer advertisement was found in the bounded availability check. All logarithms in these solutions are to base two unless another base is shown.

Communication Theory, Trinity Term; Thursday 18 June 2009, 9.30am–11.00am. This shared Part B paper was set for Mathematics, Mathematics and Computer Science, Mathematics and Philosophy, and Mathematics and Statistics. The full three-page source and editable transcription are retained privately. The source was supplied through the past-papers disclosure, in original Part B bundle pages 184–186. No exact worked-answer advertisement was found in the bounded check.

Communication Theory, Thursday 17 June 2010, 9.30am–11.00am. The complete four-page source was supplied through the past-papers disclosure, in original Part B bundle pages 244–247. The private editable transcription retains the complete cover and all three questions. No exact worked-answer advertisement was found in the bounded availability check.

Source paper: FOI request thread. The cover identifies Communication Theory, B11a, Friday 24 June 2011, 2.30pm to 4.00pm. Its four readable pages are original private Part B bundle pages 312–315.

Original solutions to the paper released at the source request. The complete editable transcription is retained in the private examination archive.

Source: Mathematics release, bundle Part C 2007 11.pdf, pages 411–412. The Mathematics Part C paper was sat on 6 June 2011, 2.30–4.00pm. Its printed historical code is C2.2b.

The department's answer-release policy excludes ordinary odd years. Bounded exact-paper checks found no matching advertised answers, so all nine printed parts and their unnumbered requests are answered.

Source: released examination bundle, Part C 2007 11.pdf, pages 457–460. All three questions are covered. No mark allocations are printed.

Source release: Oxford examination archive. The cover dates this examination to 17 June 2011, 9.30–11.00am. The unlettered requests in Question 1 are covered together in its parent Solution, with separate Solutions for its two numbered interval tests. Questions 2 and 3 each have one complete Solution.

Original solutions to both sections and all six questions of the Approximation Theory and Finite Element Methods paper sat on 10 June 2010. Source: released Mathematics papers, Part C 2007 11.pdf. Question 1 gives the sharp bound for the printed functional; question 4 distinguishes the printed normal condition from the conormal condition needed for the requested symmetric variational construction. Statements are not reproduced.

Original solutions to all three questions of the Approximation of Functions paper sat on 16 June 2011. Source: released Mathematics papers, Part C 2007 11.pdf. Question 3 includes a counterexample to the unqualified printed endpoint exchange rule and the corrected rule. Statements are not reproduced.