Excerpt from Differential Equations: A Short Course for Engineering Students

The purpose of this book is to present those portions of Differential Equations which are most used by engineers. It was written with reference to the needs of two classes of students: those who take the subject as a preparation for the study of Mechanics, and students in Electrical Engineering who are already well grounded in the physical ideas involved in the electrical problems. The former take the first three chapters, omitting the electrical problems; the latter complete the book.

I am indebted to Edwards' Integral Calculus, and still more to the text-books of W. W. Johnson and D. A. Murray. The symbols and equations of the electrical problems are practically the same as in Bedell and Crehore's Alternating Currents. In my own classes the books will be used together.

The examples were prepared with the double purpose of illustrating the text, and of affording a review of some of the more important opertions of the Calculus.

Answers are given and stress is laid on the importance of verifying results.

In the problems, the physical meaning and use of the arbitrary constants are kept prominent.

I am under obligations to Dr. H. W. Kuhn for suggestions and corrections.

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