This invaluable book is renowned for its fully worked examples and numerous applications. Concepts are presented either graphically, analytically, or numerically (sometimes using more than one approach) depending on which seems the most appropriate to make the material clear and easy to understand. Technology is also fully integrated into problem sets and examples, providing a real world perspective. And the authors encourage readers to begin the problem solving process by estimating the solution and checking their work by examining their answers for reasonableness .