One Variable Calculus: De Gruyter Textbook

This book gives a fresh introduction into the theory of Calculus and its two main subjects of concern: differentiation, i.e. the rate of change of a function at a point,and integration, i.e. the area under the graph of a function over an interval. Calculus is a standard component of all scientific undergraduate education, because it is universally applicable in physics, engineering, biology, economics, and real life.