In the mid-eighteenth century, Swiss-born mathematician Leonhard Euler developed a formula so innovative and complex that it continues to inspire research, discussion, and even the occasional limerick.Dr. Euler's Fabulous Formulashares the fascinating story of this groundbreaking formula-long regarded as the gold standard for mathematical beauty-and shows why it still lies at the heart of complex number theory. In some ways a sequel to Nahin'sAn Imaginary Tale, this book examines the many applications of complex numbers alongside intriguing stories from the history of mathematics.Dr. Euler's Fabulous Formulais accessible to any reader familiar with calculus and differential equations, and promises to inspire mathematicians for years to come. Some images inside the book are unavailable due to digital copyright restrictions.