08年高等教育学费标准问题,有疑问？？

lnyy

4）模型二的程序：
! j8 d2 J) t3 R; v& @3 b( {
; }4 U; p  d- t8 l( Mmodel:
data:
2 Q' s! A! j8 H* R+ U9 g2 _F1=125957124000;
F2=1933151000;
F3=56972147000;
F4=92109757000;
0 q9 ]$ F5 x* O) v7 ^0 z( nF5=82509664000;
0 D" j. }5 u' B1 L, c0 _) p: tF6=36744586000;
! b+ i1 Q' y9 q; f; |8 e& jF7=37113047000;
N=19158000;
!N=17388000;
E=0.398;
) Y! g& |; E# p$ y" K2 x: z1 O" ?p1=7174.7;
p2=33444;
p2g=21001;
7 X" J, z, L( y6 @. }% rp4=18268;
0 K0 ~4 f8 }: n$ f# J2 o# dC1=0.25;
2 x2 z" L& Q5 d' q0 ~: i; c2 @C2=0.2;
C3=0.2;
C4=0.15;
( O; K% _* p+ r* k0 |3 k) N* B9 ]$ Lenddata

max=0.25*x1/sf1*(F4+F6+N*x2)/FP
+0.25*(1-E)*p1/(x1-x2)
% E- `% k; |* [1 e5 K' f+0.25*(sf1+sf2+sf3+x1)/(F4+F5+F6+F7)*N+x2
+0.25*(p2-p2g)/(x1-x2);
$ F% I1 x$ z  b* H& N
x1<C1*sf;   %此次的sf从哪里i来的。不是f吗，但是我换为f，程序就出现错误(可见附件
x1<C2*p3;
: f: }+ I8 Y5 P; c; Z1 ix1-x2<C3*p4;
N*x2+F4+F5+F6+F7<N*x1+F1+F2+F3;
5 O' T  E  p- ~( n2 Vx2<C4*x1;
/ n, c0 l$ I& ]& L0 A3 f
f=(F4+F5+F6+F7)/N+x2;
FP=(F4+F5+F6+F7)+N*x2;
p3=3.17*7174.7;
* [& z3 E: C$ J# psf1=F1/N;
8 y3 Z$ l2 ^  _5 s1 Fsf2=F2/N;
$ ^7 q5 \2 R" ^# L5 Bsf3=F2/N;
* l# s+ k- @. a) g$ ^1 cend