Matrix M1=[1];

Matrix M2= 2 3

( 2*2 ) 4 5

Matrix (3*3)M3 = 6 7 8

9 10 11

12 13 14

Matrix(4*4) M4= 15 16 17 18

19 20 21 22

23 24 25 26

27 28 29 30

..... etc for Matrix Mn

Find the sum of elemnts of the main diagonal. and give the solution in terms of A+Bn+Cn^2...