Book contents
- Frontmatter
- Dedication
- Contents
- The Purpose of This Book
- An Overview of the Projects
- Detailed Mathematical Requirements
- The Projects
- The Solutions
- 1 The Case of the Parabolic Pool Table—Solution
- 2 Calculus for Climatologists—Solution
- 3 The Case of the Swiveling Spotlight—Solution
- 4 Finding the Salami Curve—Solution
- 5 Saving Lunar Station Alpha—Solution
- 6 An Income Policy for Mediocria—Solution
- 7 The Case of the Cooling Cadaver—Solution
- 8 Designing Dipsticks—Solution
- 9 The Case of the Gilded Goose-egg—Solution
- 10 Sunken Treasure—Solution
7 - The Case of the Cooling Cadaver—Solution
from The Solutions
- Frontmatter
- Dedication
- Contents
- The Purpose of This Book
- An Overview of the Projects
- Detailed Mathematical Requirements
- The Projects
- The Solutions
- 1 The Case of the Parabolic Pool Table—Solution
- 2 Calculus for Climatologists—Solution
- 3 The Case of the Swiveling Spotlight—Solution
- 4 Finding the Salami Curve—Solution
- 5 Saving Lunar Station Alpha—Solution
- 6 An Income Policy for Mediocria—Solution
- 7 The Case of the Cooling Cadaver—Solution
- 8 Designing Dipsticks—Solution
- 9 The Case of the Gilded Goose-egg—Solution
- 10 Sunken Treasure—Solution
Summary
To: Inspector Vance McFrito
From: Math Iz Us
Subject: Calculation of the time of death of Lord Boddy
We present below our estimation of the time of death of Lord Boddy, who passed away sometime on the night of June 23-24, 20xy, as the result of a severe blow to the back of the head administered with a heavy brass candlestick. Since only one suspect failed to have an alibi at the time of death, we can therefore conclude who committed the murder.
We accuse Professor Prune of murdering Lord Boddy in the study with the candlestick at approximately 11:28 PM on June 23, 20xy. The reasoning that led us to this conclusion follows.
Let T denote the temperature of the study. (All temperatures will be measured in degrees Celsius.) According to evidence presented by Sherlock Marples, and because of the precautions taken to keep the study unoccupied throughout the investigation, we may assume that T remained constant throughout the period of the investigation.
Let t denote the number of hours elapsed from the time of the murder. Let a denote the number of hours from the time of the murder until 1:30 AM. Let C(t) denote the temperature of the corpse t hours after the time of the murder. Let y{t) denote the difference in temperature between corpse and study t hours after the murder.
- Type
- Chapter
- Information
- Calculus Mysteries and Thrillers , pp. 103 - 106Publisher: Mathematical Association of AmericaPrint publication year: 1998