Matlab中多元函数求极值问题有这样一个方程:Y=25.8963+1.815x1-0.7646x2+0.3464x3+0.93625x1x2+0.4688x1x3+0.1363x2x3-0.7065x1^2-0.6852x^2-1.7547x^3x1,x2,x3的取值范围都是(-2,2)怎么编写matlab程序来求这个函数的极值
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![Matlab中多元函数求极值问题有这样一个方程:Y=25.8963+1.815x1-0.7646x2+0.3464x3+0.93625x1x2+0.4688x1x3+0.1363x2x3-0.7065x1^2-0.6852x^2-1.7547x^3x1,x2,x3的取值范围都是(-2,2)怎么编写matlab程序来求这个函数的极值](/uploads/image/z/3930224-32-4.jpg?t=Matlab%E4%B8%AD%E5%A4%9A%E5%85%83%E5%87%BD%E6%95%B0%E6%B1%82%E6%9E%81%E5%80%BC%E9%97%AE%E9%A2%98%E6%9C%89%E8%BF%99%E6%A0%B7%E4%B8%80%E4%B8%AA%E6%96%B9%E7%A8%8B%EF%BC%9AY%3D25.8963%2B1.815x1-0.7646x2%2B0.3464x3%2B0.93625x1x2%2B0.4688x1x3%2B0.1363x2x3-0.7065x1%5E2-0.6852x%5E2-1.7547x%5E3x1%2Cx2%2Cx3%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E9%83%BD%E6%98%AF%EF%BC%88-2%2C2%EF%BC%89%E6%80%8E%E4%B9%88%E7%BC%96%E5%86%99matlab%E7%A8%8B%E5%BA%8F%E6%9D%A5%E6%B1%82%E8%BF%99%E4%B8%AA%E5%87%BD%E6%95%B0%E7%9A%84%E6%9E%81%E5%80%BC)
Matlab中多元函数求极值问题有这样一个方程:Y=25.8963+1.815x1-0.7646x2+0.3464x3+0.93625x1x2+0.4688x1x3+0.1363x2x3-0.7065x1^2-0.6852x^2-1.7547x^3x1,x2,x3的取值范围都是(-2,2)怎么编写matlab程序来求这个函数的极值
Matlab中多元函数求极值问题
有这样一个方程:
Y=25.8963+1.815x1-0.7646x2+0.3464x3+0.93625x1x2+0.4688x1x3+0.1363x2x3-0.7065x1^2-0.6852x^2-1.7547x^3
x1,x2,x3的取值范围都是(-2,2)
怎么编写matlab程序来求这个函数的极值?能帮我写出来最好
我试过fmincon,可以提示Index exceeds matrix dimensions的错误
Matlab中多元函数求极值问题有这样一个方程:Y=25.8963+1.815x1-0.7646x2+0.3464x3+0.93625x1x2+0.4688x1x3+0.1363x2x3-0.7065x1^2-0.6852x^2-1.7547x^3x1,x2,x3的取值范围都是(-2,2)怎么编写matlab程序来求这个函数的极值
clc;clear
Y=inline('25.8963+1.815*x(1)-0.7646*x(2)+0.3464*x(3)+0.93625*x(1)*x(2)+0.4688*x(1)*x(3)+0.1363*x(2)*x(3)-0.7065*x(1)^2-0.6852*x(2)^2-1.7547*x(3)^3','x')
LB=[-2 -2 -2];
UB=[2 2 2];
x0=[1 1 1]
[x,fval,exitflag]=fmincon(Y,x0,[],[],[],[],LB,UB)
结果:
x =
-2 2 2
fval =
-3.2495
exitflag =
1