Question

what is diagonal matrix
what is scalar matrix
what is column matrix
what is identity matrix

Answer 1

Answer:

diagonal matrix :

a matrix having non-zero elements only in the diagonal running from the upper left to the lower right.

scalar matrix:

In Mathematics, a scalar matrix is a special kind of diagonal matrix. We can say that the scalar matrix is a diagonal matrix, in which the diagonal contains the same element. A well-known example of the scalar matrix is the identity matrix, in which the diagonal element contains the same value as 1.

column matrix:

Here we will discuss about the column matrix .

In an m × n matrix, if n = 1, the matrix is said to be a column matrix.

Definition of Column Matrix: If a matrix have only one column then it is called column matrix.

identity matrix:

In linear algebra, the identity matrix of size n is the n × n square matrix with ones on the main diagonal and zeros elsewhere. It is denoted by Iₙ, or simply by I if the size is immaterial or can be trivially determined by the context. Wikipedia