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7Â¥2009-06-04 09:25:01
icecream8508
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ÎÒ½ñÌì×öµÄ¼òµ¥Àý×ӵıà³Ì¸½×ÅÈçÏ£º !******* Á·Ï°µü´úËã·¨******* !******** ËùÐèÒªÇó½âµÄ·½³Ì****** ! x(1)=0.2*x(2)+0.1*x(3)+0.3 ! x(2)=0.2*x(1)+0.1*x(3)+1.5 ! x(3)=0.2*x(1)+0.1*x(2)+2 !******* 1.jACOBI µü´ú******* program main real B(3) real A(3,3),x(3),s(30) integer N,k integer m real(kind=8) :: eps real(kind=8) :: xo integer,parameter:: NM=1000 eps=1.0e-6 !***********ϵÊý¾ØÕó************* B(1)=0.3 B(2)=1.5 B(3)=2 A(1,2)=0.2 A(1,3)=0.1 A(2,1)=0.2 A(2,3)=0.1 A(3,1)=0.2 A(3,2)=0.1 !***************µü´ú¹«Ê½************ ! do k=1,NM,1 !Do i=1,3 ! x(i)=0.0 !end do 20 Do k=1,NM,1 Do i=1,3 s(i)=0.0 Xo=x(i) x(i)=0.0 Do j=1,3 If(i.NE.j) then ! S(i)=S(i)+A(i,j)*Xo S(i)=S(i)+A(i,j)*X(j) End if End do x(i)=B(i)-s(i) If(abs(xo-x(i)).gt.eps) then Go to 20 else exit end if end do end do !write(*,*) (x(i),i=1,3) do j=1,3 write(*,*) x(j) end do end program main |
2Â¥2009-06-03 11:50:00
maomao1210
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3Â¥2009-06-03 21:38:35
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