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function dT = km(x,sT)
      fun=@(temp)((-x(1)*x(2)*(temp).^(x(2)-1.0))./ ...  
                ((x(3)^x(2))*((1+(temp./x(3)).^x(2)).^2)));
      dT=quadl(fun,0,sT);
%xΪÊäÈëµÄÊý×飬°üÀ¨Èý¸ö²ÎÊý£¬sTΪÊý×飬Ϊ»ý·ÖµÄÉÏÏÞÖµ£»
%dTΪ·µ»ØµÄ»ý·ÖÖµ£»

È»ºóÔÙµ÷ÓÃfunctionÇó²ÎÊý£º
x0=[0.0, 0.0, 0.0]; %³õÖµ
x1=[300.0 -10.0 0.0]; %ϱ߽ç
x2=[500.0 0.0 1000.0]; %Éϱ߽ç

[x,resnorm]=lsqcurvefit(@km,x0,stimeT,dmT,x1,x2);
%x0, x1, x2·Ö±ðΪ³õÖµ£¬Ï±߽çºÍÉϱ߽磻
%stimeTºÍdmT·Ö±ðΪ×Ô±äÁ¿xºÍÒò±äÁ¿y£¬¶¼ÊÇÊý×飻

µ«ÊdzöÏÖÁËÕâÑùµÄ´íÎó£º
Error using  -
Matrix dimensions must agree.
Error in quadl (line 66)
x = [a c-h*s c c+h*fliplr(s) b];
Error in km (line 6)
dT=quadl(fun,0,sT);
Error in lsqcurvefit (line 195)
            initVals.F = feval(funfcn_x_xdata{3},xCurrent,XDATA,varargin{:});
Error in individual_kernel (line 57)
[x,resnorm]=lsqcurvefit(@km,x0,stimeT,dmT,x1,x2);
Caused by:
    Failure in initial user-supplied objective function evaluation. LSQCURVEFIT
    cannot continue.

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