Elementary Calculus

Elementary Calculus: An Approach Using Infinitesimals

Elementary Calculus: An Approach Using Infinitesimals

This is a calculus textbook at the college Freshman level based on Abraham Robinson’s infinitesimals, which date from 1960. Robinson’s modern infinitesimal approach puts the intuitive ideas of the founders of the calculus on a mathematically sound footing, and is easier for beginners to understand than the more common approach via limits.