Zou Y. Multi-Variable Calculus: A First Step

Berlin: Walter de Gruyter, 2020. — 336 p. — (De Gruyter Textbook). — ISBN: 3110674149.This book is a concise yet complete calculus textbook covering all essential topics in multi-variable calculus, including geometry in three-dimensional space, partial derivatives, maximum/minimum, multiple integrals and vector calculus as well as a chapter for ODE.
All the chapters are constructed in a logical way to outline the essence of each topic and to address potential difficulties arising from learning.True PDF