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matlab³ÌÐòÈçÏ£ºfunction agmd
clear all clc
x0=[1000,0.002,58 52];
x=fsolve(@NonlinEqs,x0)

function p=P(T)
p=exp(23.1964-3816.44/(-46.13+(T+273.15)));


function f=NonlinEqs(x)
Q=x(1);
J=x(2);
Thm=x(3);
Tgf=x(4);
Tc=50;
Th=60;
f(1)=Q-808.4027*(Tgf-Tc);
f(2)=Q-1645.88424*(Th-Thm);
f(3)=Q/0.38-98.39476*(Thm-Tgf)+2350*J;
f(4)=J-23.38876*log((101325-P(Tgf))/(101325-P(Thm)))/(Thm+Tgf+546.3);

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Originally posted by haixing2008 at 2010-1-21 21:54:
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Originally posted by abandonkkk at 2010-1-22 16:16:

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x =

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  Columns 1 through 2

   3.47281491474341   0.00002986498385

  Columns 3 through 4

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