姹備娇寰楃洰妯欏紡妤靛ぇ鐨勪笁鍊嬭畩鏁稿

gavy 发布于 2006-12-08 12:52， 649 次点击

鍋囪ō
f=(-n)*x1*log(x2)+0.5*(n*x1)*log(x2*x3)-n*log(2*besselk(x1,(x2*x3)^(0.5)))+(x1-1)*kesi_sum-0.5*x2*delta_sum-0.5*x3*theta_sum ;

鑰宯,kesi_sum,delta_sum,theta_sum 鐐哄凡鐭ユ暩锛屽叾涓璪esselk(. )鐐轰竴鍊嬪寘鍚玿1,x2,x3鐨勫嚱鏁?BR>
姹備娇寰?f 鏈

2 回复

gavy2006-12-08 13:12

i repeat the question
f=(-n)*x1*log(x2)+0.5*(n*x1)*log(x2*x3)-n*log(2*besselk(x1,(x2*x3)^(0.5)))+(x1-1)*kesi_sum-0.5*x2*delta_sum-0.5*x3*theta_sum

and n kesi_sum, delta_sum, theta_sum are constants,besselk() is a function of x1,x2,x3

we want to find the values of x1, x2, x3 to maximize the function f

hitzhang2006-12-08 18:30

具体一点
如果有离散函数fmincon还行