4.8 | Differentials


Definition of Differentials
Let \(y = f(x)\) represent a function that is differentiable on an open interval containing \(x\). The differential of \(x\) (denoted \(dx\)) is any nonzero real number. The differential of \(y\) (denoted \(dy\)) is
$$
dy = f'(x) \; dx
$$

E 4.8 Exercises