救命

422258511

syms t
x=2000/3*[3 10 20 30 40]';
y=[780.8 696.8 669.6 639.2 585.6]';
, e6 ^( u& I6 n; Sf=fittype('a*exp(b*t)','independent','t','coefficients',{'a','b'});
cfun=fit(x,y,f);
$ r0 |% N" m: E, }2 N7 N" k2 o4 d$ kxi=0:.1:20;
yi=cfun(xi);
/ ]. b0 z" ~3 J4 Hplot(x,y,'r*',xi,yi,'-b');
9 `: s) z: u2 ?. ~7 C, q9 Q
怎么运行不了？急用，帮帮忙

422258511

呵呵，发货的司法看得见啊