帮我把以下命令在matlab下运行一下,把运行结果发上来!t=[0.25,0.5,1,1.5,2,3,4,6,8];c=[ 19.21,18.15,15.36,14.10,12.89,9.32,7.45,5.24,3.01];y=log(c);aa=polyfit(t,y,1); a=aa(1)b=aa(2)k=-ad=300;v=d/exp(b) cc=exp(b)*exp(a*t);plot(t,c,'k+'

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