Tricomi

Advanced Analysis Library Only

double Tricomi (double x, double a, double b);

Purpose

Computes the Tricomi function, which is also known as the associated confluent hypergeometric U function. The Tricomi function U (x, a, b) is a solution of the following differential equation:

Parameters

Input
Name Type Description
x double-precision The point at which the function is evaluated.
a double-precision One of the parameters of the Tricomi function. Refer to the definition formula of the Tricomi function for more information about a and b.
b double-precision One of the parameters of the Tricomi function. Refer to the definition formula of the Tricomi function for more information about a and b.

Return Value

Name Type Description
result double-precision The value of the Tricomi function evaluated at x.