Schaum's Outline of Differential Equations, Fifth Edition
How To Derive A Formula - Volume 1: Basic Analytical Skills And Methods For Physical Scientists (Essential Textbooks In Physics Book 0)
Differential Equations: The All in One Textbook (Haneul Choi Mathematics Textbooks)
Useful Formulae: Mathematical & Physical
Differential Forms with Applications to the Physical Sciences (Dover Books on Mathematics)
Elementary Differential Equations and Boundary Value Problems, International Adaptation
Differential Equations and Linear Algebra