Create a diagonal and non diagonal matrixa

Question

[0,0] a [0,1] a [0,2] 1 2 3a [1,0] a [1,1] a [1,2] 4 5 6a [2,0]a [2,1] a [2,2] 7 8 9

Answer 1

how to solve this I M not having any idea of this

Answer 2

you want the complete code?

Answer 3

yes I want the full coding