In the matrix `A=[{:(a,1,x),(2,sqrt(3),x^(2)-y) ,(0,5,(-2)/(5)):}] ` write
(i) the order of the matrix A.
(ii) the number of elements.
(iii) elements `a_(23) ,a_(31)` and `a_(1)`,

Explanation

To solve the given question about the matrix \( A = \begin{pmatrix} a & 1 & x \\ 2 & \sqrt{3} & x^2 - y \\ 0 & 5 & -\frac{2}{5} \end{pmatrix} \), we will follow these steps:

### Step 1: Determine the order of the matrix \( A \)

The order of a matrix is defined as the number of rows and columns it has.

- **Count the rows:** The matrix has 3 rows.
- **Count the columns:** The matrix has 3 columns.
...