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Construct a 3xx4 matrix A=[a(i j)] whose...

Construct a `3xx4` matrix `A=[a_(i j)]` whose elements `a_(i j)` are given by: (i) `a_(i j)=j` (ii) `a_(i j)=1/2|-3i+j|`

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i) `A=[[1, 2, 3, 4], [1, 2, 3, 4], [1, 2, 3, 4]]`
ii) `A=[[1, 1/2, 0, 1/2], [5/2, 2, 3/2, 1], [4, 7/2, 3, 5/2]]`
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