this is what I have in mind :
as you can see, the main matrix is 2*4, and within each cell there are 3 values
Question 1 :how do I create this ?
Question 2 if I want to access one of the cells( accessing all 3 values as a vector), corresponding to row r and column c , how can I do so ?
Quesiton 3 if I want to access the 2nd element of the 3rd top cells from the left ( here it would be 6 ), how can I do so ?