Question

Construct a 3 × 4 matrix A = [a_ij] whose elements a_ij are given by:

a_ij = j

Answer 1

a_ij = j 

Here, 

`a_11=1 , a_12=2 , a_13=3 , a_14=4`

`a_21=1 , a_22=2 , a_23 = 23 , a_24=4`

`a_31=1, a_32=2, a_33=3 and  a_34= 4 `

So, the required matrix is `[[1  2  3  4],[1  2   3  4],[1  2  3  4]]`