Type in a function, it will tell you lots of things about it (yes, including it's derivative and indefinite integral). This site only launched 1.5 years ago and I put this link here as yet another ...

Transactions in financial derivatives should be treated as separate transactions rather than as integral parts of the value of underlying transactions to which they may be linked. The value of a ...

If you have a function that represents something, the derivative of that function describes the rate of change at any point. The integral describes the area under the curve of the function.

From the standpoint of a proportional, integral, derivative (PID) process controller, the output of the PID controller is an input to the process. The output of the process, the process variable (PV), ...