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[ÇóÖú] matlab·ÇÏßÐÔ·½³ÌÇó½âfsolveÔõôʹÓòźÃÄØ ÒÑÓÐ1È˲ÎÓë

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cos(x1)+cos(x2)+cos(x3)=3*pi*m/4;(m=0.8)
cos(5*x1)+cos(5*x2)+cos(5*x3)=0;
cos(7*x1)+cos(7*x2)+cos(7*x3)=0;
ÓÚÊÇÎÒÏȶ¨ÒåÁËÕâ¸ö
function F=myfun()
syms x1 x2 x3
k1=cos(x1)+cos(x2)+cos(x3)-3*pi/5;
k2=cos(5*x1)+cos(5*x2)+cos(5*x3);
k3=cos(7*x1)+cos(7*x2)+cos(7*x3);
F=[k1;k2;k3];
end
¿ÉÊÇÎÒ´Óǰ²¢Ã»ÓÐʹÓùýfsolveÕâÌõÖ¸ÁÔÚ
function equation()
global lambda
for lambda=0:pi/50:pi/2
    x0=[0.12 0.24 0.34]*1;
    x=fsolve(@myfun,x0);
    value(N)=x(2)-x(3);
end
lambda=0:pi/50:pi/2;
plot(lambda,value)
end
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