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群组: 数学趣味、游戏、IQ等 群组: 数学建模 群组: 趣味数学 群组: Mathematica研究小组 群组: 我们的小窝 |
【1】求解:
7 C: K Q% V( \; _$ [设水库A、B、C分别向甲、乙、丙、丁四个小区供水量为x11、x12、x13、x14、x21、x22、x23、x24、x31、x32、x33、x34,则有:, p( B4 `3 W; X2 F$ [* [' ]
max 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x33
) b. q; e* `2 U1 w j& R4 Lst
& n3 a$ t( Q3 s9 Z- N' Fx34=0;
+ l% D5 o+ L5 {( l9 M3 J! @, Bx11+x12+x13+x14<=50;
9 F. n9 F( g2 @3 z) Ix21+x22+x23+x24<=60;* }1 w, Z, H4 r7 S
x31+x32+x33+x34<=50;6 n) w. e* b5 e: b% \) y$ A( e
x11+x21+x31>=30;
- d2 v7 e$ e- I9 B E. nx11+x21+x31<=80;
: X* K5 z0 B t9 U8 `# Kx12+x22+x32>=70;
; s0 [7 t( ]4 r0 S+ n/ Xx12+x22+x32<=140;7 \0 q) P5 t1 v* A4 x
x13+x23+x33>=10;
" N: S; j, S- U+ P. U }x13+x23+x33<=30;" T' h: h8 }$ a
x14+x24+x34>=10;
& E0 `6 Y2 |9 c1 D" Zx14+x24+x34<=50;# m o! G% \0 G/ u/ ?5 w$ `% M" g: Z
end
+ Z' u4 h* X& [% t3 G, B6 ?LINGO程序:: `9 J9 ^! P9 O1 M
max=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;9 l( l* B. x9 D: `
x11+x12+x13+x14<=50;7 q$ b2 J1 I! h5 \% t( `% U9 x4 e# y+ ?
x21+x22+x23+x24<=60;
I# U# s+ ~) {) u. tx31+x32+x33+x34<=50;
_/ H Z5 A# c' Ix11+x21+x31>=30;1 M5 B/ N0 H2 C* N3 [
x11+x21+x31<=80;0 m* B+ X8 T" G0 \! P2 Z
x12+x22+x32>=70;/ s) N9 e5 ?& N5 q# y5 x: O0 R @
x12+x22+x32<=140;
$ F) C( {( q* l: c! C) _* l3 m- j( }x13+x23+x33>=10; x c" l4 q& @# o& p
x13+x23+x33<=30;7 a1 u$ J% f: n7 S* W
x14+x24+x34>=10;) G- B b5 i( ^5 W) Q+ `7 g* `
x14+x24+x34<=50;* w4 V* @3 ~( \7 s
end6 L! R$ C9 e8 U- p2 H
运行结果:$ S5 D, y3 |" ]1 t8 Z
Global optimal solution found.6 ?7 q- `$ n7 N F
Objective value: 47600.00
) `1 \4 v1 N5 U1 r Total solver iterations: 7
( X* {- `# A% a' Q
: L( C( m" u5 {) Q" j$ g9 Y* Z l, l
Variable Value Reduced Cost
; Y3 I2 V3 I8 b4 F) `4 SX11 0.000000 30.00000
1 `" k. y3 T/ N% h& }: _X12 50.00000 0.000000
( \2 h' T* S9 H9 XX13 0.000000 50.00000
& }1 X; T, R1 u: b# |' r3 H5 PX14 0.000000 20.00000 M4 d3 R3 g( F: @& I2 t% U
X21 0.000000 10.000001 m" ^% y( t- X: H0 p* ], z, P( ]
X22 50.00000 0.000000
& L/ F9 D, f: V& X0 C6 D$ EX23 0.000000 20.00000
, R" ^9 W- Y5 Y) Q# GX24 10.00000 0.000000
, {# _8 r0 {9 b* u0 M. p% n( IX31 40.00000 0.000000. ?9 l0 Z' Y5 R! A/ u
X32 0.000000 10.00000
9 x/ ]6 [* P0 x4 W: W7 ?X33 10.00000 0.000000
7 K# \" I# M2 L, f' F: n6 aX34 0.000000 240.0000
0 r6 o) w3 P4 Z7 @0 i* S2 e# \* f0 u8 _% G, R, [+ V
Row Slack or Surplus Dual Price) V5 l$ r- S& g" Y7 e4 C" Z
1 47600.00 1.000000
0 [& m! _5 F" A) s6 e* y; T, X: ^2 0.000000 320.0000# j$ e- y: u$ C+ v2 f1 H) a* U
3 0.000000 320.0000/ N6 y {+ T$ P0 y# n6 H" I
4 0.000000 260.00004 t& P6 T, a0 H% |* D/ r) a
5 10.00000 0.000000: p$ K( H2 I `* t! ~- {
6 40.00000 0.0000002 e# U3 p, c+ e
7 30.00000 0.000000) D( ~; i2 |1 {, r2 p3 z
8 40.00000 0.000000
% [7 i- n+ k1 I6 X9 0.000000 -40.000004 i! P2 B0 h: N0 f7 }# L
10 20.00000 0.0000004 U- `8 b0 F B2 I& A5 F
11 0.000000 -20.00000
0 a% K! P3 i7 C12 40.00000 0.000000- _6 y' j C) Y; f# ^
0 U/ D. b* c8 l6 s$ X9 l% e$ B
【2】求解:
6 s. L2 P k; k: @模型:
0 m! s0 l1 e9 Z& wmax 290x11+320x12+230x13+280x14+310x21+320x22+260x23+300x24+260x31+250x32+220x33
/ M: Y$ W8 A. zst5 u$ a: k `% u+ d& W
x34=0;
Y9 r$ [1 ?0 yx11+x12+x13+x14<=100;/ d+ m" H0 [9 b5 U
x21+x22+x23+x24<=120;' @ ]9 q1 M. u. \7 |% ^9 ^
x31+x32+x33+x34<=100;
+ k" a( a% W" R) R: mx11+x21+x31>=30;
# [3 `6 R* O# X5 Z& w% ?% Ox11+x21+x31<=80;' @' f2 Z* j( W) G1 A6 L
x12+x22+x32>=70;/ C5 V) j& A# o0 `$ c* G# T
x12+x22+x32<=140;0 A9 q8 u/ l! l0 r2 d8 r, P
x13+x23+x33>=10;
Y J- ^' Z# N% E5 S2 i, `" e, B2 Gx13+x23+x33<=30;
8 @: B3 P$ r$ o. Q+ P& Z6 \x14+x24+x34>=10;1 S( O! a- r: K! q
x14+x24+x34<=50;
. t' Y( I$ |/ iend
8 k. N: m$ J7 N+ |3 lLINGO程序:; B( d' h) d3 y a
max=290*x11+320*x12+230*x13+280*x14+310*x21+320*x22+260*x23+300*x24+260*x31+250*x32+220*x33;
f2 G) W9 }8 }$ p2 T! M7 Wx11+x12+x13+x14<=100;
$ [ U& F! j/ O7 ^1 b1 ex21+x22+x23+x24<=120;" x# ^* A" @& G. j2 g
x31+x32+x33+x34<=100;
u+ u( A9 S. \x11+x21+x31>=30;
5 n# Z& U" X) y& c. c& nx11+x21+x31<=80;
! a& s( C8 N9 N+ J1 E5 o) Ox12+x22+x32>=70;" X+ \8 l2 `: f( S3 M4 v. @
x12+x22+x32<=140;0 Y$ h, Y2 P# L
x13+x23+x33>=10;+ A- O8 G0 Y$ V1 l( Z" j' K4 T3 l
x13+x23+x33<=30;! W" ~; q9 d* M; P' O
x14+x24+x34>=10;
; e+ ~% p' P9 w$ X8 Qx14+x24+x34<=50;5 m3 f; p$ j+ T6 }9 o1 N
end
' ` B9 e8 J) d0 y: h运行结果: 2 _1 A3 o0 _; U1 m+ T
Global optimal solution found.
/ _: ^2 ?' X+ e Objective value: 88700.00& V) ~, D0 H( j6 b4 @/ G
Total solver iterations: 7
4 a) D3 U' O( l( B% f
/ ?, C6 M9 c% Y9 V6 R1 X6 b
- N0 k# f) o* h% F+ X7 m- s, B" uVariable Value Reduced Cost
4 n, ~5 \) J8 X1 FX11 0.000000 20.000005 r) y2 p$ H5 ~6 o1 t0 s5 U+ ]
X12 100.0000 0.0000004 D0 W5 Y1 {+ b: ?4 N
X13 0.000000 40.00000
6 f) V y' K# `+ _) aX14 0.000000 20.00000
" B( u9 h+ x$ d1 V5 UX21 30.00000 0.000000
6 O+ v! ~$ @6 z c& ?7 O9 FX22 40.00000 0.000000 G3 g+ S) m' ^2 J4 \1 A1 x1 P
X23 0.000000 10.00000
0 F3 n$ P& D6 R/ M. N2 M! }X24 50.00000 0.000000
: u' r8 H2 G; e2 ?6 I6 RX31 50.00000 0.000000
) y! n: I1 p4 A) R2 ]) oX32 0.000000 20.00000% b4 }* W. A- v0 g6 r- K6 F: O
X33 30.00000 0.000000$ k& O; G8 q' j |$ I4 }
X34 0.000000 250.0000
0 [# G0 ]: z6 K8 |+ ?/ o% S, x& q
Row Slack or Surplus Dual Price' a5 K$ }, J0 ? j9 z; W
1 88700.00 1.0000001 Q+ Y; ~# u4 j1 X4 m, u
2 0.000000 50.00000: C- S" i6 s& V) }9 Z
3 0.000000 50.000008 e; I7 `6 S, A+ O: R
4 20.00000 0.0000006 T. J, i0 g: K2 C9 L
5 50.00000 0.0000003 f0 u B* H* Y" z9 o
6 0.000000 260.0000
# |+ Q2 C+ R4 Q' ^7 70.00000 0.000000
' w! L6 v$ i% }& J! w5 A, x8 0.000000 270.0000
. ~5 j$ e8 {% b9 20.00000 0.000000
6 r6 \! H9 h E10 0.000000 220.0000: W( F2 M% m9 N, i
11 40.00000 0.0000005 H% f3 R& S1 F1 _/ ?/ ?0 y
12 0.000000 250.0000 |
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