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Question
Construct a 3 × 4 matrix A = [aij] whose elements aij are given by:
aij = 2i
Solution
aij = 2i
Here,
`a_11=2(1)=2 , a_12=2(1)=2,a_13=2(1)=2, a_14=2(1)=2`
`a_21=2(2)=4,a_22=2(2)=4, a_23=2(2)=4 , a_24 = 2(2)=4`
`a_31=2(3)=6, a_23=2(3)=6,a_33=2(3)=6 and a_34=2(3)=6`
So, the required matrix is `[[2 2 2 2 ],[4 4 4 4],[6 6 6 6 ]]`
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