:ȡָ(ȡ)

ʽ:GetMatrixPart(A,i,j,m,n)

A:ԭʼ
i:ȡ¾Aеʼ(1ʼ)
j:ȡ¾Aеʼ(1ʼ)
m:ȡ¾
n:ȡ¾

˵:ִгɹAȡm*nľ

:
a =
[ 67.0000000000000    62.0000000000000    67.0000000000000    13.0000000000000    39.0000000000000
  28.0000000000000    1.00000000000000    15.0000000000000    24.0000000000000    54.0000000000000
  22.0000000000000    46.0000000000000    4.00000000000000    86.0000000000000    98.0000000000000
  68.0000000000000    98.0000000000000    61.0000000000000    67.0000000000000    9.00000000000000
  51.0000000000000    51.0000000000000    35.0000000000000    37.0000000000000    26.0000000000000 ]
b=GetMatrixPart(a,2,2,3,3)//ִбõ½.aĵ22пʼȡһ3*3ľ
b =
[ 1.00000000000000    15.0000000000000    24.0000000000000
  46.0000000000000    4.00000000000000    86.0000000000000
  98.0000000000000    61.0000000000000    67.0000000000000 ]
