function?y=ill（tx）
a=1;b=0.3;
y=[a*x（1）*x（2）-b*x（1）-a*x（1）*x（2）]‘;

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

?????文件???????2148??2009-03-22?15:24??sis（4）.fig

?????文件??????90112??2009-03-23?13:09??傳染病模型SI、SIS、SIR.doc

?????文件?????????40??2009-03-23?17:00??說(shuō)明.txt

?????文件?????????70??2009-03-22?14:31??ill.m

?????文件??????14054??2009-03-23?13:08??si（1）.fig

?????文件???????2511??2009-03-22?09:50??si（2）.fig

?????文件???????2421??2009-03-22?14:23??sir（1）.fig

?????文件???????2067??2009-03-22?14:29??sir（2）.fig

?????文件???????7336??2009-03-22?17:27??sir（3）.fig

?????文件???????2577??2009-03-22?12:06??sis（1）.fig

?????文件???????1904??2009-03-23?12:57??sis（2）.fig

?????文件???????2724??2009-03-22?15:15??sis（3）.fig

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

???????????????127964????????????????????12