Question

The rank of a unitary matrix of order n is

Answer 1

Answer:

rank of unit matrix of order n is n.

Step-by-step explanation:

We can see that it is an Echelon Form or triangular Form . Now we know that the number of non zero rows of the reduced echelon form is the rank of the matrix.

In our case non zero rows are 3 hence rank of matrix is ρ = 3.