Question

1. A system is given as follows: x+2y =4,2x+y =5. Express the system in AX=b form and solve by Gauss Jordan method.

Answer 1

Answer:

For example, consider the following 2 × 2system of equations.

3x + 4y = 7

4x − 2y = 5

We can write this system as an augmented matrix (please note that a more common formatting for augmented matrices has a solid vertical line running through the matrix, rather than a line on each row):

[

3

4

|

7

4

−

2

|

5

]

We can also write a matrix containing just the coefficients. This is called the

coefficient matrix.

Answer 2

Answer:

A system is given as follows: x+2y =4,2x+y =5. Express the system in AX=b form and solve by Gauss Jordan method.