function?a=df（xw0w1m0m1）
a=-sum（sum（（（m0.^2.*exp（x*m0）+m1.^2.*exp（x*m1））.*（exp（x*m0）+exp（x*m1））-（m0.*exp（x*m0）+m1.*exp（x*m1））.^2）./（（exp（x*m0）+exp（x*m1））.^2）））;
end

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????1232??2011-05-29?14:41??zuixiaocuofen.m

?????文件????????124??2011-05-31?19:52??f.m

?????文件????????170??2011-05-31?19:59??df.m

?????文件???????3047??2011-06-02?17:08??MRF.m

?????文件????????863??2011-05-31?20:04??newton.m

-----------?---------??----------?-----??----

?????????????????5436????????????????????5