# airy_ai

## Definition:

$Ai = airy\_ai(x)$ evaluates an approximation to the Airy function, Ai(x). It is based on a number of Chebyshev expansions.

For more information please review the s17agc function in the NAG document.

## Parameters:

x (input, double)
The argument x of the function.
$Ai$ (output, double)
Approximation of the Airy function.$A_i(x)$