Calculus I is a book for university students of any university branch of science. You will find summaries of theory and exercises solved, of the following topics: Real Numbers, Complex Numbers, Basic Topology, Sequences, Series, Functions:Limits and Continuity, Differential Calculus, and Riemann Integral.

I have 20 years of experience teaching mathematics at the university level. And, as a teacher of Algebra, Calculus, Statistics, etc., of university students, and, as a result of the needs that I have seen in my students, I have written this book.

This book is characterized by being practical and didactic. It is also useful as a guide for the student.

I hope it will be useful to you, above all.