上述非线性方程组如何准确快速求x的值,其他参数已知。

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function [y] = find_y(k,rou,beta)
syms x real
myfun=@(x)rou.^2/(2*x.^2)*(exp(-2*x)-1+2*x)+4*rou*(1-rou)/x.^2*(exp(-x)-1+x)-k.^2/beta;
y = vpasolve( myfun(x)==0 );
end

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