Books with author David S. Kahn

“An absorbing and thoroughly well documented account” of WWII naval intelligence and the Allied hunt for the Nazi code machine known as the Enigma (Warship). From the start of World War II to mid-1943, British and American naval forces fought a desperate battle against German submarine wolfpacks. And the Allies might have lost the struggle at sea without an astounding intelligence coup. Here, the author brings to life the race to break the German U-boat codes. As the Battle of the Atlantic raged, Hitler’s U-boats reigned. To combat the growing crisis, ingenious amateurs joined the nucleus of dedicated professionals at Bletchley Park to unlock the continually changing German naval codes. Their mission: to read the U-boat messages of Hitler’s cipher device, the Enigma. They first found success with the capture of U-110,—which yielded the Enigma machine itself and a trove of secret documents. Then the weather ship Lauenburg seized near the Arctic ice pack provided code settings for an entire month. Finally, two sailors rescued a German weather cipher that enabled the team at Bletchley to solve the Enigma after a year-long blackout. In “a highly recommended account with a wealth of materials” Seizing the Enigma tells the story of a determined corps of people who helped turn the tide of the war (Naval Historical Foundation).

Concise and highly focused, this volume offers everything high school and beginning college students need to know to handle problems in probability and statistics. Numerous rigorously tested examples and coherent, to-the-point explanations are presented in an easy-to-follow format.The treatment is organized in a way that permits readers to advance sequentially or skip around between chapters. An essential companion volume to the author's Attacking Trigonometry Problems and Attacking Problems in Logarithms and Exponential Functions, this book will equip students with the skills they will need to successfully approach the problems in probability and statistics that they will encounter on exams.

Concise and highly focused, this volume offers everything high school and beginning college students need to know to handle problems in probability and statistics. Numerous rigorously tested examples and coherent, to-the-point explanations are presented in an easy-to-follow format.The treatment is organized in a way that permits readers to advance sequentially or skip around between chapters. An essential companion volume to the author's Attacking Trigonometry Problems and Attacking Problems in Logarithms and Exponential Functions, this book will equip students with the skills they will need to successfully approach the problems in probability and statistics that they will encounter on exams.

For almost four desperate years, from 1939 to the middle of 1943, the British and, in time, American navies fought a savage, losing battle against German U-boat wolf-packs. The Allies might never have turned the tide without an intelligence coup. The race to break the German U-boat codes is one of the greatest untold stories of the Second World War. Kahn expertly brings this tale to life in this updated edition of his classic book.Soon after war broke out, Hitler’s U-boats began to sever Allied lifelines. In the grey wasteland of the North Atlantic, submarines prowled; at night, the sky lit up with the flames of torpedoed and sinking merchant ships and tankers.To meet the growing crisis, ingenious amateurs joined the nucleus of dedicated professionals at Bletchley Park. As the Battle of the Atlantic raged, they raced to unlock the continually changing German naval codes. Their mission: to read the U-boat messages of Hitler’s cipher device, the Enigma.Critical to their success was a series of raids at sea. U-110, captured intact in the mid-Atlantic, yielded an example of the Enigma machine itself – as well as a trove of secret documents. The weather ship Lauenburg, seized near the Arctic ice pack, provided code-settings for an entire month. In the Mediterranean, two sailors rescued a German weather cipher than enabled the team at Bletchley to solve the Enigma after a yearlong blackout.

If you are preparing for the AP Calculus AB or BC exam, you’ll find all the techniques and information you need in this guide. Cracking the AP Calculus AB & BC Exams, 2010 Edition comes from the test-prep experts at The Princeton Review, and it includes:•5 full-length AP Calculus practice tests — 3 for Calculus AB and 2 for Calculus BC•Comprehensive subject review covering the essential test topics: derivatives, logarithmic functions, integrals, and more•Numerous problem sets for practice and review•Detailed explanations for answers to all AP Calculus practice and test questions•List of critical Calculus formulas and prerequisite math

Scoring high on the AP Calculus AB & BC Exams is very different from earning straight A’s in school. We don’t try to teach you everything there is to know about calculus—only the strategies and information you’ll need to get your highest score. In Cracking the AP Calculus AB & BC Exams, we’ll teach you how to·Use our preparation strategies and test-taking techniques to raise your score·Focus on the topics most likely to appear on the test·Test your knowledge with review questions for each calculus topic coveredThis book includes 5 full-length practice AP Calculus AB & BC tests: 3 for AB and 2 for BC. All of our practice questions are just like those you’ll see on the actual exam, and we explain how to answer every question.Cracking the AP Calculus AB & BC Exams has been fully updated for the 2009 tests.

Scoring high on the AP Calculus AB & BC Exams is very different from earning straight A’s in school. We don’t try to teach you everything there is to know about calculus—only the strategies and information you’ll need to get your highest score. In Cracking the AP Calculus AB & BC Exams, we’ll teach you how to·Use our preparation strategies and test-taking techniques to raise your score·Focus on the topics most likely to appear on the test·Test your knowledge with review questions for each calculus topic coveredThis book includes 5 full-length practice AP Calculus AB & BC tests: 3 for AB and 2 for BC. All of our practice questions are just like those you’ll see on the actual exam, and we explain how to answer every question.Cracking the AP Calculus AB & BC Exams has been fully updated for the 2008 tests.

If you need to know it, it’s in this book. Cracking the AP Calculus AB and BC Exams, 2012 Edition, includes: • 5 full-length practice tests with detailed explanations (3 for AB and 2 for BC) • Over 400 practice questions to hone your skills • Detailed answers and explanations to show you exactly how to improve • A cheat sheet of key formulas • Updated strategies which reflect the AP test scoring change • Engaging and comprehensive review of all topics, from derivatives to integrals to logarithmic functions

Seizing the Enigma tells the thrilling story of the Royal Navy's battle to crack the Germans' supposedly unbreakable U-boat Enigma code, which would allow the vital Allied convoys in the North Atlantic to be routed away from Dönitz's wolfpacks. This battle was fought both on shore and at sea: by an assortment of scientists, chess champions and linguists, including Alan Turing, the father of the modern computer, who struggled to crack Enigma at Bletchley Park, and in the Atlantic by sailors and intelligence officers, such as Ian Fleming, the future creator of James Bond, who undertook dangerous and often fatal missions to seize the essential encryption keys and Enigma machine components from Kriegsmarine surface ships and U-boats. Kahn expertly brings this unparalleled intelligence operation to life in this revised paperback edition of his classic book.

THE BOOK THAT GETS YOU RESULTS*Includes four full-length AP Calculus practice tests, two each for the AB & BC exams.*Sharpen your skills with more than 900 practice questions.*Review the essential calculus covered on the exam.WE KNOW THE AP CALCULUS AB & BC EXAMSThe experts at The Princeton Review study the AP Calculus exam and other standardized tests each year to make sure you get the most up-to-date, thoroughly researched books possible.WE KNOW STUDENTSEach year we help more than two million students score high with our courses, bestselling books, and award-winning software.WE GET RESULTSStudents who take our courses for the SAT, GRE, LSAT, and many other tests see score improvements that have been verified by independent accounting firms. The proven techniques we teach in our courses are in this book.AND IF IT'S ON THE AP CALCULUS EXAM, IT'S IN THIS BOOKWe don't try to teach you everything there is to know about calculus-only the facts and techniques you'll need to know to score high on the Advanced Placement exam. There's a big difference. In Cracking the AP Calculus AB & BC, 1999-2000 Edition, you will learn to think like the test-makers and:*Review and practice the calculus concepts that are covered on the exam*Score higher by mastering a few essential problem-solving techniques*Immediately recognize problem types and recall the techniques that are needed to solve them*Memorize important formulas so you won't have to rely on your calculator*Become a test-taking expert by practicing on the more than 900 problems in this bookPractice your skills on the four full-length sample tests inside (two each for both the AB and BC exams). The questions are just like the ones you'll see on the actual AP Calculus exam, and we fully explain every answer.

This is the story of a 10 year girl who is rather quite and shy but very warm and friendly. Although she doesn't have many friends, she does have a wonderful doll collection. A collection of dolls that are known as The Cherished Friends. These dolls serve as Molly's only friends and companionship but when Molly finally gets the doll she was missing to complete her collection, the most amazing and incredible story and transformation takes place, transporting Molly from a shy and insecure child through all of life's lessons to arrive at a most magical place. Learning all important aspects of life, Molly finds strength, friendship, honesty and success through the guidance and wisdom of The Cherished Friends. A most magical adventure that anyone would love to live through.