MATH40004 REVISED 2 CHANGELOG AND EVIDENCE
English review edition prepared on 4 October 2026 from a preserved source copy. It is a later presentation, not the historical study interface. Source checks and difficulty judgements describe the original material author's own process; they do not indicate Imperial College London endorsement.
Source SHA-256: 2380e6e5080fd8f2291b6256625e83ba96f99868429ac2f5594a707169409be0Source date: 2026-08-06
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Mathematical typesetting and diagrams are retained below. Chinese prose is replaced by the English passages that follow, in source reading order.
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change notes and evidence-chain completion
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1. Reasons for return and this revision
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Codex's independent review noted that the previous final package omitted the 2020 formal question booklet and official solutions/marking materials. Consequently, the workbook's 2020 question-level
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ability units starting at AU001 and its claim of actually checking 2020–2026 could not be independently verified from original package materials. This version no longer uses generated reports to certify themselves. Instead, the user's
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original 2020 PDF from this course session is included in the final package under its original filename, and a SHA-256 evidence index covers all formal-paper materials for 2020–2026.
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2. Original 2020 evidence
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field
content
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original filename
MATH40004MATH40011_Calculus and Applications_Q&S;_May_2020(3).pdf
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Source: provided by the user in this MATH40004 course session.
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Page count
22
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path within the package
06_SOURCE_EVIDENCE/2020/MATH40004MATH40011_Calculus and Applications_Q&S;_May_2020(3).pdf
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File-content page map: page 1 is the Imperial College London MATH40004
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The 2020 formal examination cover is followed by Q1–Q6 on pages 2–7. Page 8 starts “Final Exam, 2020 SOLUTIONS and MARKING
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SCHEME”. Page 13 starts “EXAMINATION SOLUTIONS 2019-20”, with marks and seen/unseen labels. Page 22 contains examiner comments.
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2020 formal question-booklet cover
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Mathematical typesetting and diagrams are retained below. Chinese prose is replaced by the English passages that follow, in source reading order.
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2020 Solutions and Marking Scheme first page
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Mathematical typesetting and diagrams are retained below. Chinese prose is replaced by the English passages that follow, in source reading order.
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2019-20 Examination Solutions marking page
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2020 examiner-comment pages
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3. Mechanical workbook-format repairs
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In “Explanation and acceptance summary”, the value 187 in D6 and F6 is now displayed as an integer. B6, H6 and the old-six-paper effective-coverage rate are shown as percentages. Ability-unit counts
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and the calculations A+B=207/210 and D=3 are unchanged. A new “Original evidence index” workbook sheet lists the original filenames and page
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counts, sources, SHA-256 hashes and final package paths.
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Mathematical typesetting and diagrams are retained below. Chinese prose is replaced by the English passages that follow, in source reading order.
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4. Status of revised training materials
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The six question papers, six course-method solution sets and their mathematical content remain unchanged from the preceding revision. This revision addresses the evidence chain and mechanical display issues; it does not use evidence
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revision as a reason to alter Tony's training content. Old files remain inactive_superseded and are excluded from the new Codex active import.
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5. Starting points for independent review
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Reviewers should first check 07_MANIFESTS/SHA256SUMS.txt, then open the original PDF in 06_SOURCE_EVIDENCE/2020 and compare it page by page with the workbook's 2020
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ability units. The report provides navigation and change notes only; it cannot replace the original PDF.