Question

the matrix
Find the rank
A: 1 23
142
265​

Answer 1

Answer:

ok

Step-by-step explanation:

a=142

265:123 ok it is correct

Answer 2

First we will convert the given matrix into Echelon form and then find a number of non zero rows.

The order of A is 3 × 3.

1 2 3

A= 1 4 2

2 6 5

Convert R3 ⟶ R3 - R1 and R3 ⟶ R3 - R2

1 2 3

A= 1 4 2

0 0 0

Now, the above matrix is in echelon form. In this number non zero rows is 2. Hence rank of matrix 2.