Question

If a=diag(3,-1) then matrix a is

Answer 1

Given:

$\bold{a=\ diag(3, -1)}$

To find:

Matrix a=?

Solution:

In the give equation a matrix a is define, that diagonal are '3, -1' so, matrix is:

$\left[\begin{array}{ccc}3&0\\0&-1\\\end{array}\right]$

In this matrix is 2×2.

The matrix a is:  $\left[\begin{array}{ccc}3&0\\0&-1\\\end{array}\right]$