ERFC Complimentary Error Function

Section: Mathematical Functions


Computes the complimentary error function for real arguments. The erfc function takes only a single argument
  y = erfc(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 erfc function is defined by the integral:

and is the integral of the normal distribution.


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

which results in the following plot.