Final value theorem

The final value theorem is one of several similar theorems used to relate frequency domain expressions to the time domain behavior as time approaches infinity. A final value theorem allows the time domain behavior to be directly calculated by taking a limit of a frequency domain expression, as opposed to converting to a time domain expression and taking its limit.

The following pages contain more specific information on final value theorems, which vary somewhat depending on the transform used:

• Z-transform
• Laplace transform