The product is a hardcover textbook titled "Applied Differential Equations" by Murray R. Spiegel, published by Prentice Hall in 1961. It is intended for high school students studying calculus, math, and STEM subjects. The book covers advanced and technical topics in engineering, mathematics, differential equations, and physics, making it a valuable resource for students looking to deepen their understanding of these subjects. Written in English, this textbook provides a comprehensive exploration of applied differential equations, making it a valuable addition to any math textbook collection.