救命

422258511

syms t
x=2000/3*[3 10 20 30 40]';
y=[780.8 696.8 669.6 639.2 585.6]';
  U! r: a' e% _3 w, y: ~6 cf=fittype('a*exp(b*t)','independent','t','coefficients',{'a','b'});
" j2 t! t. t+ Icfun=fit(x,y,f);
! M# v% e0 J7 ^xi=0:.1:20;
; @" g6 }0 t2 m, H( M  X. t6 Lyi=cfun(xi);
0 n6 U; ~. W$ z: c) ?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