Calculus Made Easy - Being a Very-Simplest Introduction to Those Beautiful Methods of Reckoning Which Are Generally Called by the TERRIFYING NAMES of the Differential Calculus and the Integral

From the PROLOGUE. CONSIDERING how many fools can calculate, it is surprising that it should be thought either a difficult or a tedious task for any other fool to learn how to master the same tricks. Some calculus-tricks are quite easy. Some are e...