gusucode.com > symbolic工具箱matlab源码程序 > symbolic/@double/dawson.m
function y = dawson(x) % DAWSON Dawson's integral % Y = DAWSON(X) represents Dawson's integral, which is defined as: % % dawson(x) = exp(-x^2)*int(exp(t^2),t,[0,x]). % % It returns the special values % % dawson(0) = 0, % dawson(inf) = 0, % dawson(-inf) = 0. % % For all other symbolic values of x, unevaluated function calls are % returned. % % See also ERF, ERFC. % Copyright 2013 The MathWorks, Inc. y = sym.useSymForNumeric(@dawson, x);