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Question: Arranging Matrix

Question:Arranging Matrix

serena88 110
matrix
September 14 2012
0

Hi, I have a 9x1 'j' matrix, i am trying to arrange it into a 'b' matrix. For b[6..9,1], I would like it to have matrix 'j' in 6,5,4,3. May I know how do i do it please?

j:=RandomMatrix(9,1):
b[1..2,1]:=j[1..2,1]:
b[3..5,1]:=j[7..9,1]:
b[6..9,1]:=j[6..3,1]: <<<doesn't work

Thanks.
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