能不能帮忙用Lingo做个题呀~我木有分了……听说很简单的谢谢!rp=w1*r1+w2*r2+w3*r3q^2=(w1,w2,w3)*( 0.0533 0.3053 -0.0700 *(w1,w2,w3)'0.3053 21.6396 -4.3033-0.0700 -4.3033 0.8575)max(rp-q^2)0.2
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![能不能帮忙用Lingo做个题呀~我木有分了……听说很简单的谢谢!rp=w1*r1+w2*r2+w3*r3q^2=(w1,w2,w3)*( 0.0533 0.3053 -0.0700 *(w1,w2,w3)'0.3053 21.6396 -4.3033-0.0700 -4.3033 0.8575)max(rp-q^2)0.2](/uploads/image/z/12663540-36-0.jpg?t=%E8%83%BD%E4%B8%8D%E8%83%BD%E5%B8%AE%E5%BF%99%E7%94%A8Lingo%E5%81%9A%E4%B8%AA%E9%A2%98%E5%91%80%7E%E6%88%91%E6%9C%A8%E6%9C%89%E5%88%86%E4%BA%86%E2%80%A6%E2%80%A6%E5%90%AC%E8%AF%B4%E5%BE%88%E7%AE%80%E5%8D%95%E7%9A%84%E8%B0%A2%E8%B0%A2%21rp%3Dw1%2Ar1%2Bw2%2Ar2%2Bw3%2Ar3q%5E2%3D%28w1%2Cw2%2Cw3%29%2A%28+0.0533+0.3053+-0.0700+%2A%28w1%2Cw2%2Cw3%29%270.3053+21.6396+-4.3033-0.0700+-4.3033+0.8575%29max%28rp-q%5E2%290.2)
能不能帮忙用Lingo做个题呀~我木有分了……听说很简单的谢谢!rp=w1*r1+w2*r2+w3*r3q^2=(w1,w2,w3)*( 0.0533 0.3053 -0.0700 *(w1,w2,w3)'0.3053 21.6396 -4.3033-0.0700 -4.3033 0.8575)max(rp-q^2)0.2
能不能帮忙用Lingo做个题呀~我木有分了……听说很简单的谢谢!
rp=w1*r1+w2*r2+w3*r3
q^2=(w1,w2,w3)*( 0.0533 0.3053 -0.0700 *(w1,w2,w3)'
0.3053 21.6396 -4.3033
-0.0700 -4.3033 0.8575)
max(rp-q^2)
0.2
能不能帮忙用Lingo做个题呀~我木有分了……听说很简单的谢谢!rp=w1*r1+w2*r2+w3*r3q^2=(w1,w2,w3)*( 0.0533 0.3053 -0.0700 *(w1,w2,w3)'0.3053 21.6396 -4.3033-0.0700 -4.3033 0.8575)max(rp-q^2)0.2
!注意 你的r应该有数据 否则是无界解;
model:
sets:
s/1..3/:w,r,a,b;
l(s,s):c;
endsets
data:
a=0.2 0.1 0.15;
b=0.6 0.5 0.55;
c=
0.0533 0.3053 -0.0700
0.3053 21.6396 -4.3033
-0.0700 -4.3033 0.8575;
enddata
max=rp-q;
rp=@sum(s:r*w);
q=@sum(l(i,j):c(i,j)*w(i)*w(j));
@for(s:@bnd(a,w,b));
@sum(s:w)=1;
end
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