36.txt

数学建模的一些示例

Min 0.1x1+0.2x2+0.3x3+0.4x4
st
r11x1+r12x2+r13x3+r14x4>=15
r21x1+r22x2+r23x3+r24x4>=28
r31x1+r32x2+r33x3+r34x4>=21
r41x1+r42x2+r43x3+r44x4>=30
290r11+315r21+350r31+455r41<=1850
290r12+315r22+350r32+455r42<=1850
290r13+315r23+350r33+455r43<=1850
290r14+315r24+350r34+455r44<=1850
290r11+315r21+350r31+455r41>=1750
290r12+315r22+350r32+455r42>=1750
290r13+315r23+350r33+455r43>=1750
290r14+315r24+350r34+455r44>=1750
r11+r21+r31+r41<=5
r12+r22+r32+r42<=5
r13+r23+r33+r43<=5
r14+r24+r34+r44<=5
end
gin20