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program main
   parameter  n=600
   double precision u(0:n),u1(0:n),x0,x1,x,t0,t1,h,dett,lambda,y(0:n)
   integer i,j
   x0=0.0d0
   x1=6.0d0                           
   t0=0.0d0
   lambda=0.3d0
   t1=0.5d0
   h=0.01d0
   dett=0.003d0
    x=x0
   !do i=0,n,1
         !if(i<=250)then
     !y(i)=1.0
         !else
        ! y(i)=0
         !end if
        ! end do
        do i=0,n,1
                 if(x>=1 .and. x<=3) then
                 u(i)=1.0d0
                 else
                 u(i)=0.0d0
                 end if
                 x=x+h
         end do
         open(1,file="yingfeng.dat"
         t=t0+dett
         x=x0
         do while(t<=t1)
             x=x0+h
                         do j=1,n,1
                                 u1(j)=u(j)-3*lambda*(u(j)-u(j-1))
                                 
                                   if(abs(t-0.5)<=0.0001)then
                                   write(1,*)x,u1(j),y(j)
                                   end if
                                 x=x+h
                     end do
          do j=1,n-1
                 u(j)=u1(j)
                 u(0)=1
                 u(1)=0
                 end do

             t=t+dett
         end do
stop
end
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3Â¥: Originally posted by bennett_14 at 2016-01-02 16:35:26
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4Â¥2016-01-02 17:51:51
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5Â¥: Originally posted by fmying at 2016-01-02 19:32:34
ÄãµÄ³ÌÐòÖÐ×îÖØÒªµÄ²¿·ÖÈçÏ£º
double precision ...t0,t1,...,dett...
t0=0.0d0
t1=0.5d0
dett=0.003d0
...
t=t0+dett
do while(t<=t1)
...
if(abs(t-0.5)<=0.0001) then
write(1,*)x,u1(j),y(j)
...

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·¢×ÔСľ³æAndroid¿Í»§¶Ë
7Â¥2016-01-03 09:34:43
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ÒýÓûØÌû:
5Â¥: Originally posted by fmying at 2016-01-02 19:32:34
ÄãµÄ³ÌÐòÖÐ×îÖØÒªµÄ²¿·ÖÈçÏ£º
double precision ...t0,t1,...,dett...
t0=0.0d0
t1=0.5d0
dett=0.003d0
...
t=t0+dett
do while(t<=t1)
...
if(abs(t-0.5)<=0.0001) then
write(1,*)x,u1(j),y(j)
...

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8Â¥2016-01-04 09:18:34
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ÒýÓûØÌû:
9Â¥: Originally posted by fmying at 2016-01-04 17:02:08
dettÏ൱ÓÚ²½³¤£¬t0+dettÊdzõÖµ£¬0.0001ÊÇãÐÖµ¡£
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