菜鸟求救MATLAB程序问题~~·

x=linspace(1750,3000,25);
y=linspace(10e-6,300e-6,25);
[X,Y]=meshgrid(x,y);
ke=0.0318*exp(1.36e8/(8314*X.))
Z=-4.3e-4-8314*2.03e-8*log(1+Y.*ke)-ke*Y./exp(1+ke*Y.)*2.03e-8*1.36e8/X.;
surf(X,Y,Z);
程序提示：??? ke=0.0318*exp(1.36e8/(8314*X.))
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Error: Unbalanced or misused parentheses or brackets.
各位大神帮忙啊~~

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ke=0.0318*exp(1.36e8./(8314*X));
Z=-4.3e-4-8314*2.03e-8*log(1+Y.*ke)-ke.*Y./exp(1+ke*Y)*2.03e-8*1.36e8./X;
% 注意 以上两句的颤销点乘或段洞亮点握宽除

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