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Ò»¶ÎÄ£Ä⻯ѧ·´Ó¦µÄ´úÂ룬ÔËÐÐʱ³öÏÖ¡°Undefined function 'P' for input arguments of type 'double'£¬¶øÎÒÖ»ÊÇÏëÓÃP£¨i£©×÷Ϊһ¸öÊý×é´¢´æ·Ö×ÓÊý£¬Çë´ó¼Ò°ïÎÒ¿´¿´£¬ÔõôÐ޸ģ¿Ð»Ð»´ó¼Ò!


Xm=2000;Xa=2;Xr=0;  % [Xm]=2 mol/L
kd=0.00001;kp=1000;kt=10000000;
kd1=0.00001;kp1=1;kt1=10000; % VNa=1000
T=0;
j=0;
I=[];X=[];U=[];V=[];Pn=[];
while(T<=2400)
    Rd=kd1*Xa;
    Rp=kp1*Xm*Xr;
    Rt=0.5*kt1*Xr*Xr;
    R=Rd+Rp+Rt;
    Pd=Rd/R;Pp=Rp/R;Pt=Rt/R;
    r1=rand(1);
    t=(1/R)*log(1/r1);
    r2=rand(1);
    if r2<=Pd  %Á´Òý·¢£¨²»Çø·Öµ¥ÌåºÍ³õ¼¶×ÔÓÉ»ù£©
        Xm=Xm-2;
        Xa=Xa-1;
        Xr=Xr+2;
        j=j+1;
        X=[X;j];
        R(j)=1;
        j=j+1;
        X=[X;j];
        R(j)=1;
    else
        if r2>Pd&&r2<=Pd+Pp %Á´Ôö³¤
            Xm=Xm-1;
            b=ceil(Xr*rand(1));
            r3=X(b);
            R(r3)=R(r3)+1;
        else
            if r2>Pd+Pp&&r2<=1
                Xr=Xr-2;
                c=ceil(Xr*rand(1));
                r4=X(c);
                X(c)=[];
                d=ceil((Xr-1)*rand(1));
                r5=X(d);
                X(d)=[];
                i=R(r4)+R(r5);
               
                z=find(I==i);
                if z>=1
                    P(i)=P(i)+1;%´¢´æ·Ö×ÓÊý
                else
                    P(i)=1;%´¢´æÖÕÖ¹²úÎïÁ´³¤
                end
                 I=[I;i];
            end
        end
    end
   
    T=T+t;U=[U;T];%´¢´æÊ±¼ä
    C=(2000-Xm)*100/2000;
    V=[V;C];%´¢´æµ¥Ìåת»¯ÂÊ
    L=length(I);S=sum(I);
    E=S/L;%ƽ¾ùÁ´³¤
    Pn=[Pn;E];
end
  N=sum(P(i));
  f(i)=P(i)./N;%ÊýÁ¿·Ö²¼
  m(i)=i.*P(i);
  M=sum(m(i));
  w(i)=m(i)./M;%ÖØÁ¿·Ö²¼
  subplot(221);
  plot(I,f(i))
  subplot(222);
  plot(I,w(i))
  subplot(223);
  plot(U,V)    %ת»¯ÂÊ-ʱ¼äÇúÏß
  subplot(224);
  plot(U,Pn)   %ƽ¾ùÁ´³¤-ʱ¼äÇúÏß
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