Q51. To transpose a matrix we simply swap its rows and columns:

A B C
D E F
G H I
> > > > A D G
B E H
C F I

or

A B C
D E F
> > > > A D
B E
C F

If the matrix is called $M$ then we write the transpose of M as $tr(M)$.

Transpose these three matrices

A B C
A B C D
D E F G
0 1 0 2
1 0 3 1
0 3 0 4
2 1 4 0
1 1 0
0 1 1
1 0 1