MATLAB 程序老是报错,

MATLAB 程序老是报错,function CGG(x0,y0,eps)syms x ;syms y;k=0;X=[x,y];X0=[x0,y0];Q=[1 1;1 2];f=inline('x^2+2*y^2+2*x*y','x','y');%f=1/2*X*Q*X';fx=diff(f,x);fy=diff(f,y);G0=[subs(fx,{x,y},X0),subs(fx,{x,y},X0)];% j=jacobian(f,X);% G0=subs(j,X,X0);d0=-G0;t0=(G0*G0')/(d0*Q*d0');X1=X0+t0*d0;G1=[subs(fx,{x,y},X1),subs(fx,{x,y},X1)];%G1=subs(j,X,X1);temps=sqrt(G1(1)^2+G1(2)^2);while temps>epsal=（G1*Q*d0'）/(d0*Q*d0');dk=-G1+al*d0;k=k+1;tk=(G1*G1')/(dk*Q*dk');X1=X1+tk*dk;G1=[subs(fx,{x,y},X1),subs(fx,{x,y},X1)];% G1=subs(j,X,X1);temps=sqrt(G1(1)^2+G1(2)^2); d0=-G1;endX1,k