# 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.