To any person interested in understanding calculus through infinitesimal and infinite numbers, see: https://people.math.wisc.edu/~keisler/calc.html https://peop

To any person interested in understanding calculus through infinitesimal and infinite numbers, see: https://people.math.wisc.edu/~keisler/calc.html https://people.math.wisc.edu/~keisler/calc.html