救命

422258511

syms t
5 r7 U$ V3 c  p+ S2 cx=2000/3*[3 10 20 30 40]';
) @  s5 ~% q9 my=[780.8 696.8 669.6 639.2 585.6]';
f=fittype('a*exp(b*t)','independent','t','coefficients',{'a','b'});
cfun=fit(x,y,f);
xi=0:.1:20;
yi=cfun(xi);
plot(x,y,'r*',xi,yi,'-b');

怎么运行不了？急用，帮帮忙

422258511

呵呵，发货的司法看得见啊