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Construct a 3 xx 4matrix, whose element...

Construct a `3 xx 4`matrix, whose elements are given by:(i) `a_(i j)=1/2|-3i+j|` (ii) `a_(i j)=2i-j`

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The correct Answer is:
`(i)[(1, (1)/(2),0,(1)/(2)),((5)/(2), 2,(3)/(2),1),(4, (7)/(2), 3,(5)/(2))](ii)[(1,0,-1,-2),(3,2,1,0),(5,4,3,2)]`
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