(a) Make a matrix M1 which consists of two rows and three columns and all the entries in the
matrix are ones.
(b) Make a vector V1 consisting of three ones.
(c) Make a 3x3 matrix M2 in which the diagonal entries are all fives.
(d) Now make a matrix M3 from M1, M2 and V1 which look like the matrix given below
M3=
1 1 1
1 1 1
0 0 0
5 0 0
0 5 0
0 0 5
(e) Now use the referencing element concept to make three vectors V2, V3 and V4 such that V2
consists of first row of M3, V3 consists of second row of M3 and V4 consists of third row of M3.
(f) Now alter the fourth entry of vectors V2, fifth entry of V3 and sixth entry of V4 to 1.4 and
make a new vector M4 which looks like the matrix given below.
M4=
1 1 1
1 1 1
0 0 0
1.4 0 0
0 1.4 0
0 0 1.4