ERFCX Complimentary Weighted Error Function

Section: Mathematical Functions

Usage

Computes the complimentary error function for real arguments. The erfcx function takes only a single argument
  y = erfcx(x)

where x is either a float or double array. The output vector y is the same size (and type) as x.

Function Internals

The erfcx function is defined by the integral:

and is an exponentially weighted integral of the normal distribution.

Example

Here is a plot of the erfcx function over the range [-5,5].
--> x = linspace(0,5);
--> y = erfcx(x);
--> plot(x,y); xlabel('x'); ylabel('erfcx(x)');


which results in the following plot.