- #36

pondhockey

- 17

- 2

Can you tell me, in what context d (i.e. the differential) is considered an operator? It is not defined that way in either calculus/advance calculus text that I just now referred back to. In those texts, dx is a real variable, referred to as an independent variable, and dy is defined as f' dx. A comparable "total" differential is defined for functions of two variables. No "operator" or corresponding differential algebra is introduced - only standard algebra of real numbers is used.