救命

422258511

syms t
* w! _- j7 h" r  i, ]x=2000/3*[3 10 20 30 40]';
y=[780.8 696.8 669.6 639.2 585.6]';
  a+ m% c: ^, \& vf=fittype('a*exp(b*t)','independent','t','coefficients',{'a','b'});
cfun=fit(x,y,f);
& Q3 X  h) n2 b8 |8 Q6 V6 uxi=0:.1:20;
yi=cfun(xi);
% Y6 x) ]/ X! l$ Y' P1 t  Qplot(x,y,'r*',xi,yi,'-b');
( @( L$ Y0 L' B" r% I( c
7 V$ ]8 Q- c1 u) b; b& u) A怎么运行不了？急用，帮帮忙
4 U; H9 a+ Y% T3 J( j8 t, @

422258511

呵呵，发货的司法看得见啊