救命

422258511

syms t
x=2000/3*[3 10 20 30 40]';
" m! N  F# ?" U% 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);
3 G! G; C6 E# s7 r) i7 S" Uxi=0:.1:20;
yi=cfun(xi);
plot(x,y,'r*',xi,yi,'-b');
2 @( W+ N5 K$ D* s0 S$ a
2 w7 i! R4 z- h; J# w9 s* [( G怎么运行不了？急用，帮帮忙

422258511

呵呵，发货的司法看得见啊