# The Joy Of X: A Guided Tour of Math, from One to Infinity (Paperback)

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*Scientific American*Many people take math in high school and promptly forget much of it. But math plays a part in all of our lives all of the time, whether we know it or not. In

*The Joy of x*, Steven Strogatz expands on his hit

*New York Times*series to explain the big ideas of math gently and clearly, with wit, insight, and brilliant illustrations.

Whether he is illuminating how often you should flip your mattress to get the maximum lifespan from it, explaining just how Google searches the internet, or determining how many people you should date before settling down, Strogatz shows how math connects to every aspect of life. Discussing pop culture, medicine, law, philosophy, art, and business, Strogatz is the math teacher you wish you’d had. Whether you aced integral calculus or aren’t sure what an integer is, you’ll find profound wisdom and persistent delight in

*The Joy of x*.

*New York Times*and

*The New Yorker*and has been a frequent guest on

*Radiolab*and

*Science Friday*. He is the author of

*Sync*and

*The Joy of x*. He lives in Ithaca, New York.

"A delightful exploration of the beauty and fun of mathematics, in the best tradition of Lewis Carroll, George Gamow, and Martin Gardner. *The Joy of x* will entertain you, amaze you, and make you smarter." **— Steven Pinker, Harvard College Professor of Psychology, Harvard University, and author of How the Mind Works and The Language Instinct** "Steven Strogatz should do for math what Julia Child did for cookery. He shows that this stuff really matters, and he shows that it can nourish us."

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**James Gleick, author of**"This joyous book will remind you just how beautiful and mesmerizing math can be. Steve Strogatz is the teacher we all wish we had."

*The Information: A History, a Theory, a Flood*and*Chaos*—

**Joshua Foer, author of**

*Moonwalking with Einstein***"I loved this beautiful book from the first page. With his unique ingenuity and affable charm, Strogatz disassembles mathematics as a subject, both feared and revered, and reassembles it as a world, both accessible and magical.**

*The Joy of x*is, well, a joy." —

**Janna Levin, Professor of Physics and Astronomy, Barnard College, Columbia University, and author of**

*How the Universe Got Its Spots*and*A Madman Dreams of Turing Machines**"Amazingly, mathematicians can see patterns in the universe that the rest of us are usually blind to. With clarity and dry wit,*

*The Joy of x*opens a window onto this hidden world with its landscapes of beauty and wonder."

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**Alan Alda**"This book is, simply put, fantastic. It introduces the reader to the underlying concepts of mathematics — presenting reasons for its unfamiliar language and explaining conceptual frameworks that do in fact make understanding complex problems easier. In a world where mathematics is essential but, largely, poorly understood, Steve Strogatz's teaching skills and deft writing style are an important contribution."

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**Lisa Randall, Frank B. Baird, Jr., Professor of Science, Harvard University, and author of**

*Warped Passages*and*Knocking on Heaven's Door**"Strogatz has discovered a magical function that transforms 'math' into 'joy,' page after wonderful page. He takes everything that every mystified you about math and makes it better than clear — he makes it wondrous, delicious, and amazing."*

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**Daniel Gilbert, Professor of Psychology, Harvard University, and author of**"Strogatz may be the only person alive with the skill to pied piper me into the murky abyss of set theory. I literally learned something on every page, despite my innumerate brain. This is a fantastic book, conveyed with clarity, technical mastery, and infectious joy."

*Stumbling on Happiness*—

**Jad Abumrad, host of**

*Radiolab***"Strogatz's graceful prose is perfectly pitched for a popular math book: authoritative without being patronizing, friendly without being whimsical, and always clear and accessible. His**

*x*marks the spot — and hits it."

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**Alex Bellos, author of**

*Here's Looking at Euclid***"Even the most math-phobic readers might forget their dread after just a few pages of Strogatz’s (**

*The Calculus of Friendship*) latest. The author, a Cornell professor of applied mathematics, begins with arithmetic, by way of Sesame Street, then explores algebra, geometry, and, finally, the wonders of calculus—all done cheerfully, with many a wry turn of phrase. From addition and subtraction, with a glimpse into negative numbers and 'the black art of borrowing,' it’s a quick step into the hardcore detective work of algebra’s search for the unknown x, —