The function "Tanh(x)" stands for the hyperbolic tangent function, which is a mathematical function defined as the ratio of the hyperbolic sine to the hyperbolic cosine. It is expressed as Tanh(x) = sinh(x) / cosh(x). The output values of Tanh(x) range from -1 to 1, making it useful in various applications, including statistics and neural networks. Tanh(x) is often used in machine learning, particularly in the activation functions of artificial neurons. It helps to normalize the output of a neuron, allowing for better convergence during training. This function is similar to the sigmoid function but has a steeper gradient, which can lead to faster learning in some cases.