👉 Pittances are a type of mathematical function that is often used in the field of physics and engineering. These functions are defined as the derivative of a given function with respect to a variable, but they do not involve any direct differentiation or integration. In other words, a Pittance is a way of expressing the rate at which one quantity changes with respect to another. It's like how you can calculate how fast your car is going by looking at its speedometer and reading the number on the gauge