Question

A diagonal matrix is said to be a scalar matrix if its diagonal elements are

विकल्प

• equal

• zero

• half

• one

Answer 1

equal

Explanation:

A diagonal matrix is said to be scalar matrix 1 if its diagonal elements are equal, that is a square matrix B = [b_ij] n × n is said to be scalar matrix if b_ij = 0, when i ≠ j.

b_ij = k, When i = j, for some constant k.

For example, A = [3], B = `[(-1, 0),(0, 1)]` are scalar matrics of order 1, 2 respectively.