pastas.rfunc.DoubleExponential.gain# pastas.rfunc.DoubleExponential.gain(p: pastas.typing.ArrayLike) → float# Return the gain of the DoubleExponential response function. Parameters: p (array_like) – Response function parameters [A, alpha, a1, a2]. Returns: gain – Gain of the response function (parameter A). Return type: float