08年高等教育学费标准问题,有疑问？？

lnyy

4）模型二的程序：
5 g# ]5 U% k& |/ Y: t/ D3 h; }. h0 R
4 {; F/ R, t. s$ t5 [( `model:
data:
2 E- I0 |8 p- C5 sF1=125957124000;
9 |2 e+ g) o7 F4 E; j0 nF2=1933151000;
5 t) r5 N9 F4 }! ZF3=56972147000;
: `2 {6 J# Y2 z. }6 y' j+ eF4=92109757000;
F5=82509664000;
F6=36744586000;
F7=37113047000;
( w; u; [' L, A' C" RN=19158000;
- h- g. w6 r9 B0 A2 d& _  `' X* o( W!N=17388000;
  _9 `$ x" |# Q. d% ^2 bE=0.398;
p1=7174.7;
0 R# S5 q- L2 _. O# ep2=33444;
p2g=21001;
p4=18268;
C1=0.25;
( e6 L0 [% I) ?+ E: s; @/ ^C2=0.2;
C3=0.2;
C4=0.15;
enddata
# M4 Q1 M+ e9 F$ s0 @# B
! E: f/ O' \0 P! ]max=0.25*x1/sf1*(F4+F6+N*x2)/FP
/ H" h8 }! c: B+0.25*(1-E)*p1/(x1-x2)
+0.25*(sf1+sf2+sf3+x1)/(F4+F5+F6+F7)*N+x2
% F' b8 i! f' }2 s' t+0.25*(p2-p2g)/(x1-x2);

, A% S1 j8 l( H% q" _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;
) a" E# Q+ ?1 K: X+ qx1-x2<C3*p4;
& z: C/ @& `+ u3 ^0 t7 _" iN*x2+F4+F5+F6+F7<N*x1+F1+F2+F3;
x2<C4*x1;
7 U" [' P1 @( _2 F( ]
7 }* ~5 |' J/ D, r; @f=(F4+F5+F6+F7)/N+x2;
' |' ?$ `8 _/ o& J$ MFP=(F4+F5+F6+F7)+N*x2;
4 M# g+ Q0 k/ E* @$ Y2 X9 @p3=3.17*7174.7;
sf1=F1/N;
) W3 _* N& Y4 k$ a3 X3 N$ Rsf2=F2/N;
sf3=F2/N;
" s7 o/ Z: R8 i( G9 xend