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When Least Is Best: How Mathematicians Discovered Many Clever Ways to Make Things As Small (or As Large) As Possible

Author: Paul J Nahin
Publisher: Princeton University Press, 2011.
Edition/Format:   Print book : Document   Computer File : EnglishView all editions and formats
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What is the best way to photograph a speeding bullet? Why does light move through glass in the least amount of time possible? How can lost hikers find their way out of a forest? By combining the  Read more...

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Genre/Form: Electronic books
Additional Physical Format: Print
When Least Is Best: How Mathematicians Discovered Many Clever Ways to Make Things As Small (or As Large) As Possible
Material Type: Document
Document Type: Book, Computer File
All Authors / Contributors: Paul J Nahin
OCLC Number: 943061834
Notes: Book.
Description: 1 online resource
Contents: Preface xiii 1. Minimums, Maximums, Derivatives, and Computers 1 1.1 Introduction 1 1.2 When Derivatives Don't Work 4 1.3 Using Algebra to Find Minimums 5 1.4 A Civil Engineering Problem 9 1.5 The AM-GM Inequality 13 1.6 Derivatives from Physics 20 1.7 Minimizing with a Computer 24 2. The First Extremal Problems 37 2.1 The Ancient Confusion of Length and Area 37 2.2 Dido' Problem and the Isoperimetric Quotient 45 2.3 Steiner '"Solution" to Dido' Problem 56 2.4 How Steiner Stumbled 59 2.5 A "Hard "Problem with an Easy Solution 62 2.6 Fagnano' Problem 65 3. Medieval Maximization and Some Modern Twists 71 3.1 The Regiomontanus Problem 71 3.2 The Saturn Problem 77 3.3 The Envelope-Folding Problem 79 3.4 The Pipe-and-Corner Problem 85 3.5 Regiomontanus Redux 89 3.6 The Muddy Wheel Problem 94 4. The Forgotten War of Descartes and Fermat 99 4.1 Two Very Different Men 99 4.2 Snell' Law 101 4.3 Fermat, Tangent Lines, and Extrema 109 4.4 The Birth of the Derivative 114 4.5 Derivatives and Tangents 120 4.6 Snell' Law and the Principle of Least Time 127 4.7 A Popular Textbook Problem 134 4.8 Snell' Law and the Rainbow 137 5. Calculus Steps Forward, Center Stage 140 5.1 The Derivative:Controversy and Triumph 140 5.2 Paintings Again, and Kepler' Wine Barrel 147 5.3 The Mailable Package Paradox 149 5.4 Projectile Motion in a Gravitational Field 152 5.5 The Perfect Basketball Shot 158 5.6 Halley Gunnery Problem 165 5.7 De L' Hospital and His Pulley Problem, and a New Minimum Principle 171 5.8 Derivatives and the Rainbow 179 6. Beyond Calculus 200 6.1 Galileo'Problem 200 6.2 The Brachistochrone Problem 210 6.3 Comparing Galileo and Bernoulli 221 6.4 The Euler-Lagrange Equation 231 6.5 The Straight Line and the Brachistochrone 238 6.6 Galileo' Hanging Chain 240 6.7 The Catenary Again 247 6.8 The Isoperimetric Problem, Solved (at last!) 251 6.9 Minimal Area Surfaces, Plateau' Problem, and Soap Bubbles 259 6.10 The Human Side of Minimal Area Surfaces 271 7. The Modern Age Begins 279 7.1 The Fermat/Steiner Problem 279 7.2 Digging the Optimal Trench, Paving the Shortest Mail Route, and Least-Cost Paths through Directed Graphs 286 7.3 The Traveling Salesman Problem 293 7.4 Minimizing with Inequalities (Linear Programming) 295 7.5 Minimizing by Working Backwards (Dynamic Programming) 312 Appendix A. The AM-GM Inequality 331 Appendix B. The AM-QM Inequality, and Jensen' Inequality 334 Appendix C. "The Sagacity of the Bees" 342 Appendix D. Every Convex Figure Has a Perimeter Bisector 345 Appendix E. The Gravitational Free-Fall Descent Time along a Circle 347 Appendix F. The Area Enclosed by a Closed Curve 352 Appendix G. Beltrami 'Identity 359 Appendix H. The Last Word on the Lost Fisherman Problem 361 Acknowledgments 365 Index 367

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This book was terrific fun to read! I thought I would skim the chapters to write my review, but I was hooked by the preface, and read through the first 100 pages in one sitting... [Nahin shows] Read more...

 
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