Differential equations are a mystery to you? No problem! In the first part, this book provides you with everything you need to solve differential equations. You will then learn what differential equations are and the methods used to solve them. In the third part, things get serious: you will solve simple differential equations computationally. But don't worry: a variety of examples will give you the opportunity to practice the techniques thoroughly. And to understand why you are going through all this effort, you will finally encounter famous differential equations from biology, chemistry, physics, and economics.